X crashes on login

Since about a week ago, X crashes on login. After my initial auto-login, it dumps me back to the lightdm login screen. This always happens at least once. After a second, third or fourth attempt, it usually works.

I tried downgrading xorg-server (from 21.1.8 to 21.1.7 and then 21.1.6), but no joy.

I use LightDM and XFCE on X11.

It appears to have something to do with loading/modesetting the graphics driver (amdgpu). I have an AMD 3400G APU with integrated Radeon Vega 11 graphics, and no separate GPU. I added the amdgpu module to dracut explicitly, but that made no difference, either.

Here’s my Xorg.1.log file. I don’t really understand these errors.

[  1336.399] 
X.Org X Server 1.21.1.7
X Protocol Version 11, Revision 0
[  1336.399] Current Operating System: Linux frigate 6.5.3-zen1-1-zen #1 ZEN SMP PREEMPT_DYNAMIC Wed, 13 Sep 2023 08:37:16 +0000 x86_64
[  1336.399] Kernel command line: BOOT_IMAGE=/boot/vmlinuz-linux-zen root=UUID=6d9fe898-7793-43a8-8648-a290aa7775f1 rw nowatchdog nvme_load=YES loglevel=3
[  1336.399]  
[  1336.399] Current version of pixman: 0.42.2
[  1336.399] 	Before reporting problems, check http://wiki.x.org
	to make sure that you have the latest version.
[  1336.399] Markers: (--) probed, (**) from config file, (==) default setting,
	(++) from command line, (!!) notice, (II) informational,
	(WW) warning, (EE) error, (NI) not implemented, (??) unknown.
[  1336.399] (==) Log file: "/var/log/Xorg.1.log", Time: Fri Sep 15 20:13:36 2023
[  1336.399] (==) Using config directory: "/etc/X11/xorg.conf.d"
[  1336.399] (==) Using system config directory "/usr/share/X11/xorg.conf.d"
[  1336.399] (==) No Layout section.  Using the first Screen section.
[  1336.399] (==) No screen section available. Using defaults.
[  1336.399] (**) |-->Screen "Default Screen Section" (0)
[  1336.399] (**) |   |-->Monitor "<default monitor>"
[  1336.399] (==) No monitor specified for screen "Default Screen Section".
	Using a default monitor configuration.
[  1336.399] (==) Automatically adding devices
[  1336.399] (==) Automatically enabling devices
[  1336.399] (==) Automatically adding GPU devices
[  1336.399] (==) Automatically binding GPU devices
[  1336.399] (==) Max clients allowed: 256, resource mask: 0x1fffff
[  1336.399] (WW) The directory "/usr/share/fonts/misc" does not exist.
[  1336.399] 	Entry deleted from font path.
[  1336.399] (WW) The directory "/usr/share/fonts/Type1" does not exist.
[  1336.399] 	Entry deleted from font path.
[  1336.399] (WW) The directory "/usr/share/fonts/100dpi" does not exist.
[  1336.399] 	Entry deleted from font path.
[  1336.399] (WW) The directory "/usr/share/fonts/75dpi" does not exist.
[  1336.399] 	Entry deleted from font path.
[  1336.399] (==) FontPath set to:
	/usr/share/fonts/TTF,
	/usr/share/fonts/OTF
[  1336.399] (==) ModulePath set to "/usr/lib/xorg/modules"
[  1336.399] (II) The server relies on udev to provide the list of input devices.
	If no devices become available, reconfigure udev or disable AutoAddDevices.
[  1336.399] (II) Module ABI versions:
[  1336.399] 	X.Org ANSI C Emulation: 0.4
[  1336.399] 	X.Org Video Driver: 25.2
[  1336.399] 	X.Org XInput driver : 24.4
[  1336.399] 	X.Org Server Extension : 10.0
[  1336.400] (++) using VT number 7

[  1336.400] (II) systemd-logind: logind integration requires -keeptty and -keeptty was not provided, disabling logind integration
[  1336.400] (II) xfree86: Adding drm device (/dev/dri/card1)
[  1336.400] (II) Platform probe for /sys/devices/pci0000:00/0000:00:08.1/0000:07:00.0/drm/card1
[  1336.405] (--) PCI:*(7@0:0:0) 1002:15d8:1458:d000 rev 200, Mem @ 0xd0000000/268435456, 0xe0000000/2097152, 0xfcb00000/524288, I/O @ 0x0000f000/256
[  1336.405] (WW) Open ACPI failed (/var/run/acpid.socket) (No such file or directory)
[  1336.405] (II) LoadModule: "glx"
[  1336.405] (II) Loading /usr/lib/xorg/modules/extensions/libglx.so
[  1336.406] (II) Module glx: vendor="X.Org Foundation"
[  1336.406] 	compiled for 1.21.1.7, module version = 1.0.0
[  1336.406] 	ABI class: X.Org Server Extension, version 10.0
[  1336.406] (II) Applying OutputClass "AMDgpu" to /dev/dri/card1
[  1336.406] 	loading driver: amdgpu
[  1336.406] (==) Matched amdgpu as autoconfigured driver 0
[  1336.406] (==) Matched ati as autoconfigured driver 1
[  1336.406] (==) Matched modesetting as autoconfigured driver 2
[  1336.406] (==) Matched fbdev as autoconfigured driver 3
[  1336.406] (==) Matched vesa as autoconfigured driver 4
[  1336.406] (==) Assigned the driver to the xf86ConfigLayout
[  1336.406] (II) LoadModule: "amdgpu"
[  1336.406] (II) Loading /usr/lib/xorg/modules/drivers/amdgpu_drv.so
[  1336.407] (II) Module amdgpu: vendor="X.Org Foundation"
[  1336.407] 	compiled for 1.21.1.7, module version = 23.0.0
[  1336.407] 	Module class: X.Org Video Driver
[  1336.407] 	ABI class: X.Org Video Driver, version 25.2
[  1336.407] (II) LoadModule: "ati"
[  1336.407] (II) Loading /usr/lib/xorg/modules/drivers/ati_drv.so
[  1336.407] (II) Module ati: vendor="X.Org Foundation"
[  1336.407] 	compiled for 1.21.1.8, module version = 22.0.0
[  1336.407] 	Module class: X.Org Video Driver
[  1336.407] 	ABI class: X.Org Video Driver, version 25.2
[  1336.407] (II) LoadModule: "modesetting"
[  1336.407] (II) Loading /usr/lib/xorg/modules/drivers/modesetting_drv.so
[  1336.407] (II) Module modesetting: vendor="X.Org Foundation"
[  1336.407] 	compiled for 1.21.1.7, module version = 1.21.1
[  1336.407] 	Module class: X.Org Video Driver
[  1336.407] 	ABI class: X.Org Video Driver, version 25.2
[  1336.407] (II) LoadModule: "fbdev"
[  1336.407] (WW) Warning, couldn't open module fbdev
[  1336.407] (EE) Failed to load module "fbdev" (module does not exist, 0)
[  1336.407] (II) LoadModule: "vesa"
[  1336.407] (WW) Warning, couldn't open module vesa
[  1336.407] (EE) Failed to load module "vesa" (module does not exist, 0)
[  1336.407] (II) AMDGPU: Driver for AMD Radeon:
	All GPUs supported by the amdgpu kernel driver
[  1336.407] (II) modesetting: Driver for Modesetting Kernel Drivers: kms
[  1336.407] (WW) xf86OpenConsole: setpgid failed: Operation not permitted
[  1336.408] (EE) AMDGPU(0): [drm] device is not DRM master.
[  1336.408] (EE) AMDGPU(1): [drm] device is not DRM master.
[  1336.408] (II) AMDGPU(2): [KMS] Kernel modesetting enabled.
[  1336.408] (EE) AMDGPU(2): [drm] device is not DRM master.
[  1336.408] (II) AMDGPU(3): [KMS] Kernel modesetting enabled.
[  1336.409] (EE) AMDGPU(3): [drm] device is not DRM master.
[  1336.409] (II) modeset(4): using drv /dev/dri/card1
[  1336.409] (EE) Screen 0 deleted because of no matching config section.
[  1336.409] (II) UnloadModule: "amdgpu"
[  1336.409] (EE) Screen 0 deleted because of no matching config section.
[  1336.409] (II) UnloadModule: "amdgpu"
[  1336.409] (EE) Screen 0 deleted because of no matching config section.
[  1336.409] (II) UnloadModule: "amdgpu"
[  1336.409] (EE) Screen 0 deleted because of no matching config section.
[  1336.409] (II) UnloadModule: "amdgpu"
[  1336.409] (II) modeset(0): Creating default Display subsection in Screen section
	"Default Screen Section" for depth/fbbpp 24/32
[  1336.409] (==) modeset(0): Depth 24, (==) framebuffer bpp 32
[  1336.409] (II) Applying OutputClass "AMDgpu" options to /dev/dri/card1
[  1336.409] (==) modeset(0): RGB weight 888
[  1336.409] (==) modeset(0): Default visual is TrueColor
[  1336.409] (II) Loading sub module "glamoregl"
[  1336.409] (II) LoadModule: "glamoregl"
[  1336.410] (II) Loading /usr/lib/xorg/modules/libglamoregl.so
[  1336.414] (II) Module glamoregl: vendor="X.Org Foundation"
[  1336.414] 	compiled for 1.21.1.7, module version = 1.0.1
[  1336.414] 	ABI class: X.Org ANSI C Emulation, version 0.4
[  1336.457] (II) modeset(0): glamor X acceleration enabled on AMD Radeon Vega 11 Graphics (raven, LLVM 16.0.6, DRM 3.54, 6.5.3-zen1-1-zen)
[  1336.457] (II) modeset(0): glamor initialized
[  1336.457] (==) modeset(0): VariableRefresh: disabled
[  1336.457] (==) modeset(0): AsyncFlipSecondaries: disabled
[  1336.457] (II) modeset(0): Output HDMI-1 has no monitor section
[  1336.457] (II) modeset(0): Output DVI-D-1 has no monitor section
[  1336.457] (II) modeset(0): EDID for output HDMI-1
[  1336.457] (II) modeset(0): Manufacturer: DEL  Model: f10d  Serial#: 1094996034
[  1336.457] (II) modeset(0): Year: 2019  Week: 11
[  1336.457] (II) modeset(0): EDID Version: 1.3
[  1336.457] (II) modeset(0): Digital Display Input
[  1336.457] (II) modeset(0): Max Image Size [cm]: horiz.: 60  vert.: 34
[  1336.457] (II) modeset(0): Gamma: 2.20
[  1336.457] (II) modeset(0): DPMS capabilities: StandBy Suspend Off
[  1336.457] (II) modeset(0): Supported color encodings: RGB 4:4:4 YCrCb 4:4:4 
[  1336.457] (II) modeset(0): First detailed timing is preferred mode
[  1336.457] (II) modeset(0): redX: 0.653 redY: 0.336   greenX: 0.322 greenY: 0.609
[  1336.457] (II) modeset(0): blueX: 0.152 blueY: 0.060   whiteX: 0.313 whiteY: 0.329
[  1336.457] (II) modeset(0): Supported established timings:
[  1336.457] (II) modeset(0): 720x400@70Hz
[  1336.457] (II) modeset(0): 640x480@60Hz
[  1336.457] (II) modeset(0): 640x480@75Hz
[  1336.457] (II) modeset(0): 800x600@60Hz
[  1336.457] (II) modeset(0): 800x600@75Hz
[  1336.457] (II) modeset(0): 1024x768@60Hz
[  1336.457] (II) modeset(0): 1024x768@75Hz
[  1336.457] (II) modeset(0): 1280x1024@75Hz
[  1336.457] (II) modeset(0): Manufacturer's mask: 0
[  1336.457] (II) modeset(0): Supported standard timings:
[  1336.457] (II) modeset(0): #0: hsize: 1152  vsize 864  refresh: 75  vid: 20337
[  1336.457] (II) modeset(0): #1: hsize: 1280  vsize 1024  refresh: 60  vid: 32897
[  1336.457] (II) modeset(0): #2: hsize: 1600  vsize 900  refresh: 60  vid: 49321
[  1336.457] (II) modeset(0): #3: hsize: 1920  vsize 1080  refresh: 60  vid: 49361
[  1336.457] (II) modeset(0): Supported detailed timing:
[  1336.457] (II) modeset(0): clock: 148.5 MHz   Image Size:  598 x 336 mm
[  1336.457] (II) modeset(0): h_active: 1920  h_sync: 2008  h_sync_end 2052 h_blank_end 2200 h_border: 0
[  1336.457] (II) modeset(0): v_active: 1080  v_sync: 1084  v_sync_end 1089 v_blanking: 1125 v_border: 0
[  1336.457] (II) modeset(0): Serial No: 8L70KV2
[  1336.457] (II) modeset(0): Monitor name: DELL SE2719H
[  1336.457] (II) modeset(0): Ranges: V min: 56 V max: 76 Hz, H min: 30 H max: 83 kHz, PixClock max 175 MHz
[  1336.458] (II) modeset(0): Supported detailed timing:
[  1336.458] (II) modeset(0): clock: 148.5 MHz   Image Size:  598 x 336 mm
[  1336.458] (II) modeset(0): h_active: 1920  h_sync: 2008  h_sync_end 2052 h_blank_end 2200 h_border: 0
[  1336.458] (II) modeset(0): v_active: 1080  v_sync: 1084  v_sync_end 1089 v_blanking: 1125 v_border: 0
[  1336.458] (II) modeset(0): Supported detailed timing:
[  1336.458] (II) modeset(0): clock: 74.2 MHz   Image Size:  598 x 336 mm
[  1336.458] (II) modeset(0): h_active: 1920  h_sync: 2008  h_sync_end 2052 h_blank_end 2200 h_border: 0
[  1336.458] (II) modeset(0): v_active: 540  v_sync: 542  v_sync_end 547 v_blanking: 562 v_border: 0
[  1336.458] (II) modeset(0): Supported detailed timing:
[  1336.458] (II) modeset(0): clock: 74.2 MHz   Image Size:  598 x 336 mm
[  1336.458] (II) modeset(0): h_active: 1280  h_sync: 1390  h_sync_end 1430 h_blank_end 1650 h_border: 0
[  1336.458] (II) modeset(0): v_active: 720  v_sync: 725  v_sync_end 730 v_blanking: 750 v_border: 0
[  1336.458] (II) modeset(0): Supported detailed timing:
[  1336.458] (II) modeset(0): clock: 27.0 MHz   Image Size:  598 x 336 mm
[  1336.458] (II) modeset(0): h_active: 720  h_sync: 736  h_sync_end 798 h_blank_end 858 h_border: 0
[  1336.458] (II) modeset(0): v_active: 480  v_sync: 489  v_sync_end 495 v_blanking: 525 v_border: 0
[  1336.458] (II) modeset(0): Number of EDID sections to follow: 1
[  1336.458] (II) modeset(0): EDID (in hex):
[  1336.458] (II) modeset(0): 	00ffffffffffff0010ac0df142504441
[  1336.458] (II) modeset(0): 	0b1d0103803c2278ea4815a756529c27
[  1336.458] (II) modeset(0): 	0f5054a54b00714f8180a9c0d1c00101
[  1336.458] (II) modeset(0): 	010101010101023a801871382d40582c
[  1336.458] (II) modeset(0): 	450056502100001e000000ff00384c37
[  1336.458] (II) modeset(0): 	304b56320a2020202020000000fc0044
[  1336.458] (II) modeset(0): 	454c4c20534532373139480a000000fd
[  1336.458] (II) modeset(0): 	00384c1e5311000a202020202020012d
[  1336.458] (II) modeset(0): 	020317b14c901f010203071216041314
[  1336.458] (II) modeset(0): 	0565030c001000023a801871382d4058
[  1336.458] (II) modeset(0): 	2c450056502100001e011d8018711c16
[  1336.458] (II) modeset(0): 	20582c250056502100009e011d007251
[  1336.458] (II) modeset(0): 	d01e206e28550056502100001e8c0ad0
[  1336.458] (II) modeset(0): 	8a20e02d10103e960056502100001800
[  1336.458] (II) modeset(0): 	00000000000000000000000000000000
[  1336.458] (II) modeset(0): 	00000000000000000000000000000081
[  1336.458] (II) modeset(0): Not using default mode "1440x810" (bad mode clock/interlace/doublescan)
[  1336.458] (II) modeset(0): Not using default mode "1600x900" (bad mode clock/interlace/doublescan)
[  1336.458] (II) modeset(0): Not using default mode "1600x900" (bad mode clock/interlace/doublescan)
[  1336.458] (II) modeset(0): Not using default mode "1920x1080" (bad mode clock/interlace/doublescan)
[  1336.458] (II) modeset(0): Printing probed modes for output HDMI-1
[  1336.458] (II) modeset(0): Modeline "1920x1080"x60.0  148.50  1920 2008 2052 2200  1080 1084 1089 1125 +hsync +vsync (67.5 kHz eP)
[  1336.458] (II) modeset(0): Modeline "1920x1080"x60.0  173.00  1920 2048 2248 2576  1080 1083 1088 1120 -hsync +vsync (67.2 kHz d)
[  1336.458] (II) modeset(0): Modeline "1920x1080"x50.0  148.50  1920 2448 2492 2640  1080 1084 1089 1125 +hsync +vsync (56.2 kHz e)
[  1336.458] (II) modeset(0): Modeline "1920x1080"x59.9  148.35  1920 2008 2052 2200  1080 1084 1089 1125 +hsync +vsync (67.4 kHz e)
[  1336.458] (II) modeset(0): Modeline "1920x1080"x59.9  138.50  1920 1968 2000 2080  1080 1083 1088 1111 +hsync -vsync (66.6 kHz d)
[  1336.458] (II) modeset(0): Modeline "1680x1050"x60.0  148.50  1680 2008 2052 2200  1050 1084 1089 1125 +hsync +vsync (67.5 kHz e)
[  1336.458] (II) modeset(0): Modeline "1680x1050"x60.0  146.25  1680 1784 1960 2240  1050 1053 1059 1089 -hsync +vsync (65.3 kHz d)
[  1336.458] (II) modeset(0): Modeline "1680x1050"x59.9  119.00  1680 1728 1760 1840  1050 1053 1059 1080 +hsync -vsync (64.7 kHz d)
[  1336.458] (II) modeset(0): Modeline "1400x1050"x74.8  155.80  1400 1464 1784 1912  1050 1052 1064 1090 +hsync +vsync (81.5 kHz d)
[  1336.458] (II) modeset(0): Modeline "1400x1050"x60.0  122.00  1400 1488 1640 1880  1050 1052 1064 1082 +hsync +vsync (64.9 kHz d)
[  1336.458] (II) modeset(0): Modeline "1600x900"x59.9  118.25  1600 1696 1856 2112  900 903 908 934 -hsync +vsync (56.0 kHz d)
[  1336.458] (II) modeset(0): Modeline "1600x900"x60.0  108.00  1600 1624 1704 1800  900 901 904 1000 +hsync +vsync (60.0 kHz e)
[  1336.458] (II) modeset(0): Modeline "1600x900"x59.8   97.50  1600 1648 1680 1760  900 903 908 926 +hsync -vsync (55.4 kHz d)
[  1336.458] (II) modeset(0): Modeline "1280x1024"x75.0  135.00  1280 1296 1440 1688  1024 1025 1028 1066 +hsync +vsync (80.0 kHz e)
[  1336.458] (II) modeset(0): Modeline "1280x1024"x60.0  108.00  1280 1328 1440 1688  1024 1025 1028 1066 +hsync +vsync (64.0 kHz e)
[  1336.458] (II) modeset(0): Modeline "1440x900"x60.0  148.50  1440 2008 2052 2200  900 1084 1089 1125 +hsync +vsync (67.5 kHz e)
[  1336.458] (II) modeset(0): Modeline "1400x900"x60.0  103.50  1400 1480 1624 1848  900 903 913 934 -hsync +vsync (56.0 kHz d)
[  1336.458] (II) modeset(0): Modeline "1400x900"x59.9   86.50  1400 1448 1480 1560  900 903 913 926 +hsync -vsync (55.4 kHz d)
[  1336.458] (II) modeset(0): Modeline "1280x960"x60.0  108.00  1280 1376 1488 1800  960 961 964 1000 +hsync +vsync (60.0 kHz d)
[  1336.458] (II) modeset(0): Modeline "1440x810"x60.0  151.88  1440 1464 1480 1520  810 811 814 833 doublescan +hsync -vsync (99.9 kHz d)
[  1336.458] (II) modeset(0): Modeline "1368x768"x59.9   85.25  1368 1440 1576 1784  768 771 781 798 -hsync +vsync (47.8 kHz d)
[  1336.458] (II) modeset(0): Modeline "1368x768"x59.9   72.25  1368 1416 1448 1528  768 771 781 790 +hsync -vsync (47.3 kHz d)
[  1336.458] (II) modeset(0): Modeline "1280x800"x60.0  174.25  1280 1380 1516 1752  800 801 804 829 doublescan -hsync +vsync (99.5 kHz d)
[  1336.458] (II) modeset(0): Modeline "1280x800"x60.0  148.50  1280 2008 2052 2200  800 1084 1089 1125 +hsync +vsync (67.5 kHz e)
[  1336.458] (II) modeset(0): Modeline "1280x800"x60.0  134.25  1280 1304 1320 1360  800 801 804 823 doublescan +hsync -vsync (98.7 kHz d)
[  1336.458] (II) modeset(0): Modeline "1280x800"x59.8   83.50  1280 1352 1480 1680  800 803 809 831 -hsync +vsync (49.7 kHz d)
[  1336.458] (II) modeset(0): Modeline "1280x800"x59.9   71.00  1280 1328 1360 1440  800 803 809 823 +hsync -vsync (49.3 kHz d)
[  1336.458] (II) modeset(0): Modeline "1152x864"x75.0  108.00  1152 1216 1344 1600  864 865 868 900 +hsync +vsync (67.5 kHz e)
[  1336.458] (II) modeset(0): Modeline "1280x720"x60.0  156.12  1280 1376 1512 1744  720 721 724 746 doublescan -hsync +vsync (89.5 kHz d)
[  1336.458] (II) modeset(0): Modeline "1280x720"x60.0  120.75  1280 1304 1320 1360  720 721 724 740 doublescan +hsync -vsync (88.8 kHz d)
[  1336.458] (II) modeset(0): Modeline "1280x720"x59.9   74.50  1280 1344 1472 1664  720 723 728 748 -hsync +vsync (44.8 kHz d)
[  1336.458] (II) modeset(0): Modeline "1280x720"x60.0   74.25  1280 1390 1430 1650  720 725 730 750 +hsync +vsync (45.0 kHz e)
[  1336.458] (II) modeset(0): Modeline "1280x720"x50.0   74.25  1280 1720 1760 1980  720 725 730 750 +hsync +vsync (37.5 kHz e)
[  1336.458] (II) modeset(0): Modeline "1280x720"x59.9   74.18  1280 1390 1430 1650  720 725 730 750 +hsync +vsync (45.0 kHz e)
[  1336.458] (II) modeset(0): Modeline "1280x720"x59.7   63.75  1280 1328 1360 1440  720 723 728 741 +hsync -vsync (44.3 kHz d)
[  1336.458] (II) modeset(0): Modeline "1024x768"x75.0  170.24  1024 1108 1220 1416  768 768 770 801 doublescan -hsync +vsync (120.2 kHz d)
[  1336.458] (II) modeset(0): Modeline "1024x768"x60.0  133.47  1024 1100 1212 1400  768 768 770 794 doublescan -hsync +vsync (95.3 kHz d)
[  1336.458] (II) modeset(0): Modeline "1024x768"x75.0   78.75  1024 1040 1136 1312  768 769 772 800 +hsync +vsync (60.0 kHz e)
[  1336.458] (II) modeset(0): Modeline "1024x768"x70.1   75.00  1024 1048 1184 1328  768 771 777 806 -hsync -vsync (56.5 kHz d)
[  1336.458] (II) modeset(0): Modeline "1024x768"x60.0   65.00  1024 1048 1184 1344  768 771 777 806 -hsync -vsync (48.4 kHz e)
[  1336.458] (II) modeset(0): Modeline "960x720"x75.0  148.50  960 1032 1144 1320  720 720 722 750 doublescan -hsync +vsync (112.5 kHz d)
[  1336.458] (II) modeset(0): Modeline "960x720"x60.0  117.00  960 1024 1128 1300  720 720 722 750 doublescan -hsync +vsync (90.0 kHz d)
[  1336.458] (II) modeset(0): Modeline "928x696"x75.0  144.00  928 992 1104 1280  696 696 698 750 doublescan -hsync +vsync (112.5 kHz d)
[  1336.458] (II) modeset(0): Modeline "928x696"x60.1  109.15  928 976 1088 1264  696 696 698 719 doublescan -hsync +vsync (86.4 kHz d)
[  1336.458] (II) modeset(0): Modeline "896x672"x75.0  130.50  896 944 1052 1228  672 672 674 708 doublescan -hsync +vsync (106.3 kHz d)
[  1336.458] (II) modeset(0): Modeline "896x672"x60.0  102.40  896 960 1060 1224  672 672 674 697 doublescan -hsync +vsync (83.7 kHz d)
[  1336.458] (II) modeset(0): Modeline "1024x576"x60.0   98.50  1024 1092 1200 1376  576 577 580 597 doublescan -hsync +vsync (71.6 kHz d)
[  1336.458] (II) modeset(0): Modeline "1024x576"x60.0   78.38  1024 1048 1064 1104  576 577 580 592 doublescan +hsync -vsync (71.0 kHz d)
[  1336.458] (II) modeset(0): Modeline "1024x576"x59.9   46.50  1024 1064 1160 1296  576 579 584 599 -hsync +vsync (35.9 kHz d)
[  1336.458] (II) modeset(0): Modeline "1024x576"x59.8   42.00  1024 1072 1104 1184  576 579 584 593 +hsync -vsync (35.5 kHz d)
[  1336.458] (II) modeset(0): Modeline "960x600"x59.9   96.62  960 1028 1128 1296  600 601 604 622 doublescan -hsync +vsync (74.6 kHz d)
[  1336.458] (II) modeset(0): Modeline "960x600"x60.0   77.00  960 984 1000 1040  600 601 604 617 doublescan +hsync -vsync (74.0 kHz d)
[  1336.458] (II) modeset(0): Modeline "832x624"x74.6   57.28  832 864 928 1152  624 625 628 667 -hsync -vsync (49.7 kHz d)
[  1336.458] (II) modeset(0): Modeline "960x540"x60.0   86.50  960 1024 1124 1288  540 541 544 560 doublescan -hsync +vsync (67.2 kHz d)
[  1336.458] (II) modeset(0): Modeline "960x540"x60.0   69.25  960 984 1000 1040  540 541 544 555 doublescan +hsync -vsync (66.6 kHz d)
[  1336.458] (II) modeset(0): Modeline "960x540"x59.6   40.75  960 992 1088 1216  540 543 548 562 -hsync +vsync (33.5 kHz d)
[  1336.458] (II) modeset(0): Modeline "960x540"x59.8   37.25  960 1008 1040 1120  540 543 548 556 +hsync -vsync (33.3 kHz d)
[  1336.458] (II) modeset(0): Modeline "800x600"x75.0  101.25  800 832 928 1080  600 600 602 625 doublescan +hsync +vsync (93.8 kHz d)
[  1336.458] (II) modeset(0): Modeline "800x600"x70.0   94.50  800 832 928 1080  600 600 602 625 doublescan +hsync +vsync (87.5 kHz d)
[  1336.458] (II) modeset(0): Modeline "800x600"x65.0   87.75  800 832 928 1080  600 600 602 625 doublescan +hsync +vsync (81.2 kHz d)
[  1336.458] (II) modeset(0): Modeline "800x600"x60.0   81.00  800 832 928 1080  600 600 602 625 doublescan +hsync +vsync (75.0 kHz d)
[  1336.458] (II) modeset(0): Modeline "800x600"x72.2   50.00  800 856 976 1040  600 637 643 666 +hsync +vsync (48.1 kHz d)
[  1336.458] (II) modeset(0): Modeline "800x600"x75.0   49.50  800 816 896 1056  600 601 604 625 +hsync +vsync (46.9 kHz e)
[  1336.458] (II) modeset(0): Modeline "800x600"x60.3   40.00  800 840 968 1056  600 601 605 628 +hsync +vsync (37.9 kHz e)
[  1336.458] (II) modeset(0): Modeline "800x600"x56.2   36.00  800 824 896 1024  600 601 603 625 +hsync +vsync (35.2 kHz d)
[  1336.458] (II) modeset(0): Modeline "840x525"x60.0   73.12  840 892 980 1120  525 526 529 544 doublescan -hsync +vsync (65.3 kHz d)
[  1336.458] (II) modeset(0): Modeline "840x525"x59.9   59.50  840 864 880 920  525 526 529 540 doublescan +hsync -vsync (64.7 kHz d)
[  1336.458] (II) modeset(0): Modeline "864x486"x59.9   32.50  864 888 968 1072  486 489 494 506 -hsync +vsync (30.3 kHz d)
[  1336.458] (II) modeset(0): Modeline "864x486"x59.6   30.50  864 912 944 1024  486 489 494 500 +hsync -vsync (29.8 kHz d)
[  1336.458] (II) modeset(0): Modeline "720x576"x50.0   27.00  720 732 796 864  576 581 586 625 -hsync -vsync (31.2 kHz e)
[  1336.458] (II) modeset(0): Modeline "700x525"x74.8   77.90  700 732 892 956  525 526 532 545 doublescan +hsync +vsync (81.5 kHz d)
[  1336.458] (II) modeset(0): Modeline "700x525"x60.0   61.00  700 744 820 940  525 526 532 541 doublescan +hsync +vsync (64.9 kHz d)
[  1336.458] (II) modeset(0): Modeline "800x450"x59.9   59.12  800 848 928 1056  450 451 454 467 doublescan -hsync +vsync (56.0 kHz d)
[  1336.458] (II) modeset(0): Modeline "800x450"x59.8   48.75  800 824 840 880  450 451 454 463 doublescan +hsync -vsync (55.4 kHz d)
[  1336.458] (II) modeset(0): Modeline "720x480"x60.0   27.03  720 736 798 858  480 489 495 525 -hsync -vsync (31.5 kHz e)
[  1336.458] (II) modeset(0): Modeline "720x480"x59.9   27.00  720 736 798 858  480 489 495 525 -hsync -vsync (31.5 kHz e)
[  1336.458] (II) modeset(0): Modeline "640x512"x75.0   67.50  640 648 720 844  512 512 514 533 doublescan +hsync +vsync (80.0 kHz d)
[  1336.458] (II) modeset(0): Modeline "640x512"x60.0   54.00  640 664 720 844  512 512 514 533 doublescan +hsync +vsync (64.0 kHz d)
[  1336.458] (II) modeset(0): Modeline "700x450"x60.0   51.75  700 740 812 924  450 451 456 467 doublescan -hsync +vsync (56.0 kHz d)
[  1336.458] (II) modeset(0): Modeline "700x450"x59.9   43.25  700 724 740 780  450 451 456 463 doublescan +hsync -vsync (55.4 kHz d)
[  1336.458] (II) modeset(0): Modeline "640x480"x60.0   54.00  640 688 744 900  480 480 482 500 doublescan +hsync +vsync (60.0 kHz d)
[  1336.458] (II) modeset(0): Modeline "640x480"x75.0   31.50  640 656 720 840  480 481 484 500 -hsync -vsync (37.5 kHz e)
[  1336.458] (II) modeset(0): Modeline "640x480"x72.8   31.50  640 664 704 832  480 489 492 520 -hsync -vsync (37.9 kHz d)
[  1336.458] (II) modeset(0): Modeline "640x480"x75.0   31.50  640 656 720 840  480 481 484 500 -hsync -vsync (37.5 kHz d)
[  1336.458] (II) modeset(0): Modeline "640x480"x60.0   25.20  640 656 752 800  480 490 492 525 -hsync -vsync (31.5 kHz e)
[  1336.458] (II) modeset(0): Modeline "640x480"x59.9   25.18  640 656 752 800  480 490 492 525 -hsync -vsync (31.5 kHz e)
[  1336.458] (II) modeset(0): Modeline "720x405"x59.5   22.50  720 744 808 896  405 408 413 422 -hsync +vsync (25.1 kHz d)
[  1336.458] (II) modeset(0): Modeline "720x405"x59.0   21.75  720 768 800 880  405 408 413 419 +hsync -vsync (24.7 kHz d)
[  1336.458] (II) modeset(0): Modeline "720x400"x70.1   28.32  720 738 846 900  400 412 414 449 -hsync +vsync (31.5 kHz e)
[  1336.458] (II) modeset(0): Modeline "684x384"x59.9   42.62  684 720 788 892  384 385 390 399 doublescan -hsync +vsync (47.8 kHz d)
[  1336.458] (II) modeset(0): Modeline "684x384"x59.9   36.12  684 708 724 764  384 385 390 395 doublescan +hsync -vsync (47.3 kHz d)
[  1336.459] (II) modeset(0): Modeline "640x400"x59.9   41.75  640 676 740 840  400 401 404 415 doublescan -hsync +vsync (49.7 kHz d)
[  1336.459] (II) modeset(0): Modeline "640x400"x60.0   35.50  640 664 680 720  400 401 404 411 doublescan +hsync -vsync (49.3 kHz d)
[  1336.459] (II) modeset(0): Modeline "576x432"x75.0   54.00  576 608 672 800  432 432 434 450 doublescan +hsync +vsync (67.5 kHz d)
[  1336.459] (II) modeset(0): Modeline "640x360"x59.9   37.25  640 672 736 832  360 361 364 374 doublescan -hsync +vsync (44.8 kHz d)
[  1336.459] (II) modeset(0): Modeline "640x360"x59.8   31.88  640 664 680 720  360 361 364 370 doublescan +hsync -vsync (44.3 kHz d)
[  1336.459] (II) modeset(0): Modeline "640x360"x59.8   18.00  640 664 720 800  360 363 368 376 -hsync +vsync (22.5 kHz d)
[  1336.459] (II) modeset(0): Modeline "640x360"x59.3   17.75  640 688 720 800  360 363 368 374 +hsync -vsync (22.2 kHz d)
[  1336.459] (II) modeset(0): Modeline "512x384"x75.0   39.38  512 520 568 656  384 384 386 400 doublescan +hsync +vsync (60.0 kHz d)
[  1336.459] (II) modeset(0): Modeline "512x384"x70.1   37.50  512 524 592 664  384 385 388 403 doublescan -hsync -vsync (56.5 kHz d)
[  1336.459] (II) modeset(0): Modeline "512x384"x60.0   32.50  512 524 592 672  384 385 388 403 doublescan -hsync -vsync (48.4 kHz d)
[  1336.459] (II) modeset(0): Modeline "512x288"x60.0   23.25  512 532 580 648  288 289 292 299 doublescan -hsync +vsync (35.9 kHz d)
[  1336.459] (II) modeset(0): Modeline "512x288"x59.9   21.00  512 536 552 592  288 289 292 296 doublescan +hsync -vsync (35.5 kHz d)
[  1336.459] (II) modeset(0): Modeline "416x312"x74.7   28.64  416 432 464 576  312 312 314 333 doublescan -hsync -vsync (49.7 kHz d)
[  1336.459] (II) modeset(0): Modeline "480x270"x59.6   20.38  480 496 544 608  270 271 274 281 doublescan -hsync +vsync (33.5 kHz d)
[  1336.459] (II) modeset(0): Modeline "480x270"x59.8   18.62  480 504 520 560  270 271 274 278 doublescan +hsync -vsync (33.3 kHz d)
[  1336.459] (II) modeset(0): Modeline "400x300"x72.2   25.00  400 428 488 520  300 318 321 333 doublescan +hsync +vsync (48.1 kHz d)
[  1336.459] (II) modeset(0): Modeline "400x300"x75.1   24.75  400 408 448 528  300 300 302 312 doublescan +hsync +vsync (46.9 kHz d)
[  1336.459] (II) modeset(0): Modeline "400x300"x60.3   20.00  400 420 484 528  300 300 302 314 doublescan +hsync +vsync (37.9 kHz d)
[  1336.459] (II) modeset(0): Modeline "400x300"x56.3   18.00  400 412 448 512  300 300 301 312 doublescan +hsync +vsync (35.2 kHz d)
[  1336.459] (II) modeset(0): Modeline "432x243"x59.9   16.25  432 444 484 536  243 244 247 253 doublescan -hsync +vsync (30.3 kHz d)
[  1336.459] (II) modeset(0): Modeline "432x243"x59.6   15.25  432 456 472 512  243 244 247 250 doublescan +hsync -vsync (29.8 kHz d)
[  1336.459] (II) modeset(0): Modeline "320x240"x72.8   15.75  320 332 352 416  240 244 246 260 doublescan -hsync -vsync (37.9 kHz d)
[  1336.459] (II) modeset(0): Modeline "320x240"x75.0   15.75  320 328 360 420  240 240 242 250 doublescan -hsync -vsync (37.5 kHz d)
[  1336.459] (II) modeset(0): Modeline "320x240"x60.1   12.59  320 328 376 400  240 245 246 262 doublescan -hsync -vsync (31.5 kHz d)
[  1336.459] (II) modeset(0): Modeline "360x202"x59.5   11.25  360 372 404 448  202 204 206 211 doublescan -hsync +vsync (25.1 kHz d)
[  1336.459] (II) modeset(0): Modeline "360x202"x59.1   10.88  360 384 400 440  202 204 206 209 doublescan +hsync -vsync (24.7 kHz d)
[  1336.459] (II) modeset(0): Modeline "320x180"x59.8    9.00  320 332 360 400  180 181 184 188 doublescan -hsync +vsync (22.5 kHz d)
[  1336.459] (II) modeset(0): Modeline "320x180"x59.3    8.88  320 344 360 400  180 181 184 187 doublescan +hsync -vsync (22.2 kHz d)
[  1336.459] (II) modeset(0): EDID for output DVI-D-1
[  1336.459] (II) modeset(0): Output HDMI-1 connected
[  1336.459] (II) modeset(0): Output DVI-D-1 disconnected
[  1336.459] (II) modeset(0): Using exact sizes for initial modes
[  1336.459] (II) modeset(0): Output HDMI-1 using initial mode 1920x1080 +0+0
[  1336.459] (==) modeset(0): Using gamma correction (1.0, 1.0, 1.0)
[  1336.459] (==) modeset(0): DPI set to (96, 96)
[  1336.459] (II) Loading sub module "fb"
[  1336.459] (II) LoadModule: "fb"
[  1336.459] (II) Module "fb" already built-in
[  1336.459] (EE) modeset(0): drmSetMaster failed: Device or resource busy
[  1336.459] (EE) 
Fatal server error:
[  1336.459] (EE) AddScreen/ScreenInit failed for driver 0
[  1336.459] (EE) 
[  1336.459] (EE) 
Please consult the The X.Org Foundation support 
	 at http://wiki.x.org
 for help. 
[  1336.459] (EE) Please also check the log file at "/var/log/Xorg.1.log" for additional information.
[  1336.459] (EE) 
[  1336.470] (EE) Server terminated with error (1). Closing log file.

My Xorg.0.log file doesn’t show the same termination error, but it does show a ton of errors related to libinput. I have no idea whether that’s related to the initial crash.

Any ideas?

Have you tried creating the following?

/etc/X11/xorg.conf.d/10-screen.conf

add

Section "Screen"
       Identifier     "Screen"
       DefaultDepth    24
       SubSection      "Display"
               Depth   24
       EndSubSection
EndSection

Thanks, but that didn’t work. In fact, it seems to have made it worse. Now X crashes every time on startup, dropping me back to the login manager. Removing the new config file didn’t change that, either.

I sense learning Wayland/Sway in my future.

Do you think it’s lightdm that’s crashing? Is lightdm enabled.

systemctl status lightdm

LightDM is running, and has no error messages in the log.

Xorg.1.log clearly shows an exit on error, perhaps to do with AMDGPU not being a DRM Master. Don’t know what that means, though.

Do you have an xorg.conf file in /etc/X11/xorg.conf.d
There shouldn’t be any as far as i know.

No, I only have a keyboard config file in there.

If it were me i would try a different dm and then go back and reinstall and enable lightdm. :thinking:

I’ve now reinstalled xorg-server, LightDM, as well as most of XFCE (since I saw a bunch of xfce4 coredumps in /var/lib/systemd/coredump), but no joy. Those coredumps suggest it could be XFCE that’s crashing, taking the X server with it. Or X crashing is causing XFCE to dump core. Who knows.

Stuck on Wayland/SDDM/Sway for now.

I would check somehow if an app isn’t launching xfce4 before it should such as vncserver which is something that comes to mind. I don’t know what you are using.

Nope, not using VNC or anything else that could start Xfce.