Plasma session goes blackout after leaving it AFK (workaround exists)

[vini.nu]

type in console
man man
man touch
man nano
man ls
man cd
man grep
man less
man more
man <command_name>

or <command_name> --help or <command_name> -h

archlinux wiki
youtube: linux terminal basics

linux web courses. linux server administration courses.

PDF books of linux systems

https://discovery.endeavouros.com/

etc

It gets easier over time.

[xircon]

Back home:

cat /etc/kernel/cmdline
 nvme_load=YES quiet nvidia_drm.modeset=1 nvidia-drm.fbdev=1 pci=nommconf nowatchdog rw root=UUID=1fe53a1a-6f4f-47df-a8cd-2f3d78155d7c resume=UUID=0942ac91-77f1-46a0-b31e-e10933c7b1bb

I have nvidia-drm.fbdev=1 in mine, don’t know if it will make a difference.

Edit:

options nvidia NVreg_PreserveVideoMemoryAllocations=1 NVreg_TemporaryFilePath=/var/tmp

Is exactly what I have in modprobe.d.

[vini.nu]

Are there any importance of the order of parameters in kernel launch parameters cmdline ?

[xircon]

No, don’t think so, I tend to add stuff at the beginning.

Think the fbdev was added by me in a vain attempt to solve the hard freezes caused by the newer drivers and I forgot to remove it

NVIDIA under x11 stutters on KDE 6.0.3

I have nvme_load=YES nowatchdog rw root=UUID=19afa6e1-261c-4fa6-86ac-0c03a48a88c6 nvidia-drm.modeset=1

[vini.nu]

sudo dmesg show a bit of interesting things (kernel exception callstack) while trying to suspend unsuccesfully (and restoring itself back again):

[  128.727239] PM: suspend entry (s2idle)
[  128.728451] thermal thermal_zone0: failed to read out thermal zone (-61)
[  128.788937] Filesystems sync: 0.061 seconds
[  128.841412] Freezing user space processes
[  128.850580] Freezing user space processes completed (elapsed 0.009 seconds)
[  128.850584] OOM killer disabled.
[  128.850585] Freezing remaining freezable tasks
[  148.851926] Freezing remaining freezable tasks failed after 20.001 seconds (4 tasks refusing to freeze, wq_busy=0):
[  148.851948] task:vb2-cx23885[1]  state:S stack:0     pid:2844  tgid:2844  ppid:2      flags:0x00004000
[  148.851955] Call Trace:
[  148.851956]  <TASK>
[  148.851962]  __schedule+0x3c7/0x1510
[  148.851970]  ? srso_alias_return_thunk+0x5/0xfbef5
[  148.851973]  ? asm_sysvec_apic_timer_interrupt+0x1a/0x20
[  148.851978]  schedule+0x27/0xf0
[  148.851984]  vb2_core_dqbuf+0x192/0x540 [videobuf2_common 63ea423c190be02e88c64bf59cbf5b1f810596ab]
[  148.851992]  ? srso_alias_return_thunk+0x5/0xfbef5
[  148.851995]  ? cx23885_buf_queue+0x6a/0x150 [cx23885 6384c0f43bc88785a3dc17c27c364134623fb4d7]
[  148.852006]  ? __pfx_autoremove_wake_function+0x10/0x10
[  148.852012]  vb2_thread+0x25b/0x2b0 [videobuf2_common 63ea423c190be02e88c64bf59cbf5b1f810596ab]
[  148.852018]  ? __pfx_vb2_thread+0x10/0x10 [videobuf2_common 63ea423c190be02e88c64bf59cbf5b1f810596ab]
[  148.852023]  kthread+0xd2/0x100
[  148.852027]  ? __pfx_kthread+0x10/0x10
[  148.852030]  ret_from_fork+0x34/0x50
[  148.852033]  ? __pfx_kthread+0x10/0x10
[  148.852035]  ret_from_fork_asm+0x1a/0x30
[  148.852041]  </TASK>
[  148.852043] task:vb2-cx23885[0]  state:S stack:0     pid:2846  tgid:2846  ppid:2      flags:0x00004000
[  148.852046] Call Trace:
[  148.852047]  <TASK>
[  148.852049]  __schedule+0x3c7/0x1510
[  148.852052]  ? srso_alias_return_thunk+0x5/0xfbef5
[  148.852056]  schedule+0x27/0xf0
[  148.852059]  vb2_core_dqbuf+0x192/0x540 [videobuf2_common 63ea423c190be02e88c64bf59cbf5b1f810596ab]
[  148.852064]  ? srso_alias_return_thunk+0x5/0xfbef5
[  148.852066]  ? cx23885_buf_queue+0x6a/0x150 [cx23885 6384c0f43bc88785a3dc17c27c364134623fb4d7]
[  148.852074]  ? __pfx_autoremove_wake_function+0x10/0x10
[  148.852078]  vb2_thread+0x25b/0x2b0 [videobuf2_common 63ea423c190be02e88c64bf59cbf5b1f810596ab]
[  148.852084]  ? __pfx_vb2_thread+0x10/0x10 [videobuf2_common 63ea423c190be02e88c64bf59cbf5b1f810596ab]
[  148.852089]  kthread+0xd2/0x100
[  148.852092]  ? __pfx_kthread+0x10/0x10
[  148.852094]  ret_from_fork+0x34/0x50
[  148.852097]  ? __pfx_kthread+0x10/0x10
[  148.852099]  ret_from_fork_asm+0x1a/0x30
[  148.852104]  </TASK>
[  148.852105] task:vb2-cx23885[1]  state:S stack:0     pid:2848  tgid:2848  ppid:2      flags:0x00004000
[  148.852108] Call Trace:
[  148.852109]  <TASK>
[  148.852111]  __schedule+0x3c7/0x1510
[  148.852113]  ? sysvec_apic_timer_interrupt+0xe/0x90
[  148.852119]  schedule+0x27/0xf0
[  148.852122]  vb2_core_dqbuf+0x192/0x540 [videobuf2_common 63ea423c190be02e88c64bf59cbf5b1f810596ab]
[  148.852127]  ? srso_alias_return_thunk+0x5/0xfbef5
[  148.852129]  ? cx23885_buf_queue+0x6a/0x150 [cx23885 6384c0f43bc88785a3dc17c27c364134623fb4d7]
[  148.852137]  ? __pfx_autoremove_wake_function+0x10/0x10
[  148.852141]  vb2_thread+0x25b/0x2b0 [videobuf2_common 63ea423c190be02e88c64bf59cbf5b1f810596ab]
[  148.852147]  ? __pfx_vb2_thread+0x10/0x10 [videobuf2_common 63ea423c190be02e88c64bf59cbf5b1f810596ab]
[  148.852152]  kthread+0xd2/0x100
[  148.852154]  ? __pfx_kthread+0x10/0x10
[  148.852157]  ret_from_fork+0x34/0x50
[  148.852159]  ? __pfx_kthread+0x10/0x10
[  148.852162]  ret_from_fork_asm+0x1a/0x30
[  148.852166]  </TASK>
[  148.852168] task:vb2-cx23885[0]  state:S stack:0     pid:2850  tgid:2850  ppid:2      flags:0x00004000
[  148.852170] Call Trace:
[  148.852171]  <TASK>
[  148.852173]  __schedule+0x3c7/0x1510
[  148.852175]  ? sysvec_apic_timer_interrupt+0xe/0x90
[  148.852180]  schedule+0x27/0xf0
[  148.852183]  vb2_core_dqbuf+0x192/0x540 [videobuf2_common 63ea423c190be02e88c64bf59cbf5b1f810596ab]
[  148.852188]  ? srso_alias_return_thunk+0x5/0xfbef5
[  148.852190]  ? cx23885_buf_queue+0x6a/0x150 [cx23885 6384c0f43bc88785a3dc17c27c364134623fb4d7]
[  148.852198]  ? __pfx_autoremove_wake_function+0x10/0x10
[  148.852202]  vb2_thread+0x25b/0x2b0 [videobuf2_common 63ea423c190be02e88c64bf59cbf5b1f810596ab]
[  148.852208]  ? __pfx_vb2_thread+0x10/0x10 [videobuf2_common 63ea423c190be02e88c64bf59cbf5b1f810596ab]
[  148.852213]  kthread+0xd2/0x100
[  148.852216]  ? __pfx_kthread+0x10/0x10
[  148.852218]  ret_from_fork+0x34/0x50
[  148.852221]  ? __pfx_kthread+0x10/0x10
[  148.852223]  ret_from_fork_asm+0x1a/0x30
[  148.852228]  </TASK>
[  148.852241] Restarting kernel threads ... done.
[  148.852588] OOM killer enabled.
[  148.852589] Restarting tasks ... done.
[  148.854303] random: crng reseeded on system resumption
[  148.854315] PM: suspend exit

---

fbdev option had no difference. I’m on Wayland.

[vini.nu]

Hol’up… Could it be that, it takes long time (>20s) for 24GB VRAM blob to get written to SSD, and that’s why some tasks in kernel says that they didn’t finished yet, and then cancels the system suspension ?

---

If it actually a bug, then it will be even more interesting if upcomming nvidia’s graphics driver update will fix that. When it comes out of beta.

[vini.nu]

Ok so seems like I was right.

https://www.kernel.org/doc/html/latest/power/freezing-of-tasks.html#v-miscellaneous

As a root user typed:
# echo 60000 > /sys/power/pm_freeze_timeout

default value are 20’000ms, so I increased it to 60’000ms (maybe could be less, but it doesn’t hurt). Now first time PC gets to sleep fast like you would expect. But when I you sleep the second time (sometimes third time), it takes several minutes; but in the end it gets to sleep just fine. Kernel log doesn’t show any error while at it. If anyone know how to get it to persist between restart, would be good to know. Or how to make it get to sleep faster.

Also

Plasma session goes blackout after leaving it AFK (workaround exists)

So I tried the systemctl enable nvidia-suspend.service systemctl enable nvidia-hibernate.service systemctl enable nvidia-resume.service systemctl enable nvidia-persistenced.service and I think I got a result but I am not sure if I inputted or understood sudo nano /etc/kernel/cmdline and appended to end: nvidia.NVreg_PreserveVideoMemoryAllocations=1 nvidia.NVreg_TemporaryFilePath=/var/tmp Is that done on the terminal? I typed nvidia.NVreg_PreserveVideoMemoryAllocations=1 but got command no…

and

Plasma session goes blackout after leaving it AFK (workaround exists)

Try sudo touch /etc/modprobe.d/nvidia.conf kate /etc/modprobe.d/nvidia.conf This creates that file if it doesn’t exist and then opens it with kate. and paste options nvidia NVreg_PreserveVideoMemoryAllocations=1 NVreg_TemporaryFilePath=/var/tmp save it and then terminal sudo dracut-rebuild and reboot. Works?

was needed.