Can't readd my Steam Library from second drive

Hi, I recently reinstalled and went to add my Steam library from my other drive, however it wasn’t recognised. The drive is mounted as /DATA and when I choose to add an additional library in Steam, /DATA shows up but there is no + next to it and I cannot add the ‘SteamGames’ directory as I have done many times. Does anyone know what is causing this?



no, btrfs. I have used the library on several distros

Can you open steam in terminal and see if it spits any errors while process of trying to add library?

I did - no errors though

Can you post the output of inxi -Fxxxza --no-host

also journalctl -p 3 -xb

System:    Kernel: 5.12.9-arch1-1 x86_64 bits: 64 compiler: gcc v: 11.1.0 
           parameters: BOOT_IMAGE=/@/boot/vmlinuz-linux root=UUID=df3be2a6-c001-4881-ad5c-a5aaad706934 rw rootflags=subvol=@ 
           quiet loglevel=3 nowatchdog 
           Desktop: KDE Plasma 5.22.0 tk: Qt 5.15.2 wm: kwin_x11 vt: 1 dm: SDDM Distro: EndeavourOS base: Arch Linux 
Machine:   Type: Desktop System: XENTA product: 1128775 v: N/A serial: <filter> 
           Mobo: ASUSTeK model: PRIME A320M-K v: Rev X.0x serial: <filter> UEFI: American Megatrends v: 5603 date: 10/14/2020 
CPU:       Info: Quad Core model: AMD Ryzen 5 PRO 3400G with Radeon Vega Graphics bits: 64 type: MT MCP arch: Zen/Zen+ 
           note: check family: 17 (23) model-id: 18 (24) stepping: 1 microcode: 8108109 cache: L2: 2 MiB 
           flags: avx avx2 lm nx pae sse sse2 sse3 sse4_1 sse4_2 sse4a ssse3 svm bogomips: 59110 
           Speed: 1795 MHz min/max: 1400/3700 MHz boost: enabled Core speeds (MHz): 1: 1795 2: 1227 3: 1227 4: 3042 5: 1689 
           6: 1227 7: 1227 8: 3037 
           Vulnerabilities: Type: itlb_multihit status: Not affected 
           Type: l1tf status: Not affected 
           Type: mds status: Not affected 
           Type: meltdown status: Not affected 
           Type: spec_store_bypass mitigation: Speculative Store Bypass disabled via prctl and seccomp 
           Type: spectre_v1 mitigation: usercopy/swapgs barriers and __user pointer sanitization 
           Type: spectre_v2 mitigation: Full AMD retpoline, IBPB: conditional, STIBP: disabled, RSB filling 
           Type: srbds status: Not affected 
           Type: tsx_async_abort status: Not affected 
Graphics:  Device-1: Advanced Micro Devices [AMD/ATI] Baffin [Radeon RX 550 640SP / RX 560/560X] vendor: ASUSTeK 
           driver: amdgpu v: kernel bus-ID: 01:00.0 chip-ID: 1002:67ff class-ID: 0300 
           Display: x11 server: 1.20.11 compositor: kwin_x11 driver: loaded: amdgpu,ati unloaded: fbdev,modesetting,vesa 
           resolution: <missing: xdpyinfo> 
           Message: Unable to show advanced data. Required tool glxinfo missing. 
Audio:     Device-1: AMD Baffin HDMI/DP Audio [Radeon RX 550 640SP / RX 560/560X] vendor: ASUSTeK driver: snd_hda_intel 
           v: kernel bus-ID: 01:00.1 chip-ID: 1002:aae0 class-ID: 0403 
           Device-2: Advanced Micro Devices [AMD] Family 17h HD Audio vendor: ASUSTeK driver: snd_hda_intel v: kernel 
           bus-ID: 08:00.6 chip-ID: 1022:15e3 class-ID: 0403 
           Device-3: Microsoft LifeCam HD-3000 type: USB driver: snd-usb-audio,uvcvideo bus-ID: 3-2:2 chip-ID: 045e:0779 
           class-ID: 0102 
           Sound Server-1: ALSA v: k5.12.9-arch1-1 running: yes 
           Sound Server-2: JACK v: 0.125.0 running: no 
           Sound Server-3: PulseAudio v: 14.2 running: yes 
           Sound Server-4: PipeWire v: 0.3.30 running: no 
Network:   Device-1: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet vendor: ASUSTeK driver: r8169 v: kernel 
           modules: r8168 port: e000 bus-ID: 06:00.0 chip-ID: 10ec:8168 class-ID: 0200 
           IF: enp6s0 state: up speed: 1000 Mbps duplex: full mac: <filter> 
Drives:    Local Storage: total: 4.95 TiB used: 3.38 TiB (68.2%) 
           SMART Message: Unable to run smartctl. Root privileges required. 
           ID-1: /dev/sda maj-min: 8:0 vendor: Seagate model: BarraCuda Q1 SSD ZA480CV10001 size: 447.13 GiB block-size: 
           physical: 512 B logical: 512 B speed: 6.0 Gb/s rotation: SSD serial: <filter> rev: N010 scheme: GPT 
           ID-2: /dev/sdb maj-min: 8:16 vendor: PNY model: CS900 960GB SSD size: 894.25 GiB block-size: physical: 512 B 
           logical: 512 B speed: 6.0 Gb/s rotation: SSD serial: <filter> rev: 0KA3 scheme: GPT 
           ID-3: /dev/sdc maj-min: 8:32 vendor: Seagate model: ST4000DM004-2CV104 size: 3.64 TiB block-size: physical: 4096 B 
           logical: 512 B speed: 6.0 Gb/s rotation: 5425 rpm serial: <filter> rev: 0001 scheme: GPT 
Partition: ID-1: / raw-size: 446.63 GiB size: 446.63 GiB (100.00%) used: 21.44 GiB (4.8%) fs: btrfs dev: /dev/sda2 
           maj-min: 8:2 
           ID-2: /boot/efi raw-size: 512 MiB size: 511 MiB (99.80%) used: 560 KiB (0.1%) fs: vfat dev: /dev/sda1 maj-min: 8:1 
           ID-3: /home raw-size: 446.63 GiB size: 446.63 GiB (100.00%) used: 21.44 GiB (4.8%) fs: btrfs dev: /dev/sda2 
           maj-min: 8:2 
           ID-4: /var/log raw-size: 446.63 GiB size: 446.63 GiB (100.00%) used: 21.44 GiB (4.8%) fs: btrfs dev: /dev/sda2 
           maj-min: 8:2 
Swap:      Alert: No Swap data was found. 
Sensors:   System Temperatures: cpu: 35.2 C mobo: N/A gpu: amdgpu temp: 52.0 C 
           Fan Speeds (RPM): N/A gpu: amdgpu fan: 3 
Info:      Processes: 308 Uptime: 2m wakeups: 0 Memory: 15.62 GiB used: 2.39 GiB (15.3%) Init: systemd v: 248 tool: systemctl 
           Compilers: gcc: 11.1.0 Packages: pacman: 1186 lib: 382 Shell: Bash v: 5.1.8 running-in: yakuake inxi: 3.3.03 
[martyn@martos ~]$ journalctl -p 3 -xb
-- Journal begins at Wed 2021-06-09 20:48:50 BST, ends at Wed 2021-06-09 21:27:02 BST. --
Jun 09 21:24:25 martos systemd-backlight[643]: Failed to get backlight or LED device 'backlight:acpi_video0': No such device
Jun 09 21:24:25 martos systemd[1]: Failed to start Load/Save Screen Backlight Brightness of backlight:acpi_video0.
░░ Subject: A start job for unit systemd-backlight@backlight:acpi_video0.service has failed
░░ Defined-By: systemd
░░ Support:
░░ A start job for unit systemd-backlight@backlight:acpi_video0.service has finished with a failure.
░░ The job identifier is 322 and the job result is failed.
Jun 09 21:25:19 martos systemd-coredump[1924]: [🡕] Process 1631 (steam) of user 1000 dumped core.
                                               Stack trace of thread 1631:
                                               #0  0x00000000f7966dcd fclose@@GLIBC_2.1 ( + 0x6edcd)
                                               #1  0x00000000f5808fb2 n/a ( + 0xb6fb2)
                                               #2  0x00000000f5809fd3 n/a ( + 0xb7fd3)
                                               #3  0x00000000f5f3c445 n/a ( + 0x7ea445)
                                               #4  0x00000000f58011a6 n/a ( + 0xaf1a6)
                                               #5  0x00000000f58011dc n/a ( + 0xaf1dc)
                                               #6  0x00000000f5cd5871 n/a ( + 0x583871)
                                               #7  0x00000000f7272ac2 n/a ( + 0x4bac2)
                                               #8  0x00000000f7257ce1 n/a ( + 0x30ce1)
                                               #9  0x00000000f725934b n/a ( + 0x3234b)
                                               #10 0x00000000f7259528 n/a ( + 0x32528)
                                               #11 0x00000000f7bd2351 XCloseDisplay ( + 0x14351)
                                               #12 0x00000000e83c9112 n/a (/home/martyn/.local/share/Steam/ubuntu12_32/ + 0xf0112)
░░ Subject: Process 1631 (steam) dumped core
░░ Defined-By: systemd
░░ Support:
░░ Documentation: man:core(5)
░░ Process 1631 (steam) crashed and dumped core.
░░ This usually indicates a programming error in the crashing program and
░░ should be reported to its vendor as a bug.

I’ve got it working [after a fashion] - I moved the ‘steamapps’ folder from inside my ‘SteamGames’ folder to the root of /DATA, added it in the add library screen in Steam and it worked fine. It seems it can’t be deeper than the root folder.
EDIT: I can also add a new folder (called whatever I like) to the /home folder but not any other drive

Does steam always core dump like that for you?


don’t know to be honest - it’s a fresh install. The problem with adding a different directory has only just started happening too. The ‘Failed to start Load/Save Screen Backlight Brightness of backlight:acpi_video0.’ error is always there though, can’t seem to get rid of it - it’s very irritating.

I had this also on my AMD Ryzen machine with amdgpu graphics driver.

Check first:

systemctl status systemd-backlight@backlight:amdgpu_bl0.service

It should show as loaded and active.

Then you can try disabling the other service:

sudo systemctl disable systemd-backlight@backlight:acpi_video0.service