[RESOLVED] kernel 6.7.1 freezes in kde + wayland graphical environment
Posted: Jan 21, 24, 22:57 antdeveloper
 Status: Interested
Joined: 10 Mar 2023
Posts: 15
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Hi Damentz,
on a Debian 12 sid + kde/wayland installation (Dell T1600), after updating the kernel from version 6.6.13 to version 6.7.1, I notice periodic freezes of the graphical environment lasting 30-60 seconds, approximately every 10 seconds, in which the mouse and keyboard freeze.

However, it is possible to access via ssh, but I don't see any errors or warnings in journal and dmesg.

So I had to reinstall the previous version 6.6.13 which works correctly, without problems.

At the moment, in the absence of errors or other reports I cannot be more specific, but something must have happened during the version changeover.

Note that the problem occurs only when using wayland, while if I use X11 it works fine.

If you can verify.

Thanks,
Antonio
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kernel 6.7.1 freezes in kde + wayland graphical environment
Posted: Jan 22, 24, 23:21 antdeveloper
 Status: Interested
Joined: 10 Mar 2023
Posts: 15
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I did some tests, trying to recompile the 6.7.1 kernel from "kernel.org" and I got the following results:

- Kernel.org: keyboard OK; mouse freezes for 1-2 seconds (approximately every 5 seconds)

- Liquorix: keyboard and mouse blocked (for several seconds), they resume a few seconds then freeze again


Keyboard/mouse are with USB cable. Same problem with wireless keyboard/mouse with USB receiver.

I opened a terminal to examine the processes with top:

- during periods of blocking, I see the display freeze

- however the system reacts normally if I access via ssh


System information:
Operating System: Debian GNU/Linux
KDE Plasma Version: 5.27.10
KDE Frameworks Version: 5.107.0
Qt Version: 5.15.10
Kernel Version: 6.7.1-1-liquorix-amd64 (64-bit)
Graphics Platform: Wayland
Processors: 8 × Intel® Xeon® CPU E31245 @ 3.30GHz
Memory: 15.6 GiB of RAM
Graphics Processor: NVD9
Manufacturer: Dell Inc.
Product Name: Precision T1600
System Version: 01
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Posted: Jan 23, 24, 10:16 damentz
 Status: Assistant
Joined: 09 Sep 2008
Posts: 1122
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Please provide proper inxi output as per README: techpatterns.com/forums/about3030.html

Also, if NVD9 refers to the GPU below, you should be using Xorg: www.techpowerup.com/gpu-specs/nvidia-gf119s.g93. Only nvidia gpus that support the absolute latest drivers will work at all with Wayland.
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kernel 6.7.1 freezes in kde + wayland graphical environment
Posted: Jan 24, 24, 0:42 antdeveloper
 Status: Interested
Joined: 10 Mar 2023
Posts: 15
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I did the following tests, recompiling the indicated kernels:

- 6.7.0-rc4 ok
- 6.7.0-rc5 ok
- 6.7.0-rc6 ok
- 6.7.0-rc7 ok
- 6.7.0-rc8 ok
- 6.7.0 bug

so the problem lies in the transition from the rc8 version to the final version 6.7.0.

--

I have currently verified that by restoring the following files from the rc8 version:

- drivers/gpu/drm/nouveau/include/nvkm/subdev/gsp.h
- drivers/gpu/drm/nouveau/nouveau_fence.c
- drivers/gpu/drm/nouveau/nouveau_fence.h
- drivers/gpu/drm/nouveau/nvkm/engine/disp/base.c
- drivers/gpu/drm/nouveau/nvkm/engine/disp/r535.c
- drivers/gpu/drm/nouveau/nvkm/engine/fifo/r535.c
- drivers/gpu/drm/nouveau/nvkm/subdev/gsp/r535.c

I get a working 6.7.1 kernel.

---

The affected commits are as follows:

2b5bd1498da5537e3d130b3862bccdd9aedd6c84
eb284f4b37817d2038fdfe1a9d51769730ab7b5f
eacabb5462717a52fccbbbba458365a4f5e61f35
9c9dd22ba5d747cceee3d1b1757448b5c48ac705
4ae3a20102b20d1927737e1a78615386d58e194d
59f6a3d8db2573aba994b95074d8f9911c969bcb
cf22fc2846cee83061082fa373574d6cdeb4c006
3108cc03236b54c56e34de01227cdacf764c50a8
a9b9b42b54b2c9251144b3b9d4ebcd83e5f8c230
7854ea0e408d7f2e8faaada1773f3ddf9cb538f5
34ce62a51e65a8b1fce0eb64dea2719c9429b306
24ab185d9804e48041b370fa9354d6d941ce0a32

now it's about finding the right one, but it will take some time.
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kernel 6.7.1 freezes in kde + wayland graphical environment
Posted: Jan 24, 24, 6:58 antdeveloper
 Status: Interested
Joined: 10 Mar 2023
Posts: 15
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Found!
Revert this commit solve the problem.

:: Code ::
git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v6.7.1&id=eacabb5462717a52fccbbbba458365a4f5e61f35

"nouveau: push event block/allowing out of the fence context"




----

inxi log:
:: Code ::

System:
Kernel: 6.7.1-1-liquorix-amd64 arch: x86_64 bits: 64 compiler: gcc
v: 13.2.0 Console: pty pts/2 wm: kwin_wayland DM: SDDM Distro: Debian
GNU/Linux trixie/sid
Machine:
Type: Desktop System: Dell product: Precision T1600 v: 01 serial: <filter>
Chassis: type: 6 serial: <filter>
Mobo: Dell model: 06NWYK v: A01 serial: <filter> BIOS: Dell v: A10
date: 02/21/2012
CPU:
Info: quad core Intel Xeon E31245 [MT MCP] arch: Sandy Bridge speed (MHz):
avg: 3301 min/max: 1600/3301
Graphics:
Device-1: NVIDIA GF119 [NVS 310] driver: nouveau v: kernel arch: Fermi pcie:
speed: 2.5 GT/s lanes: 16 ports: active: DP-2 empty: DP-1 bus-ID: 01:00.0
chip-ID: 10de:107d temp: 47.0 C
Device-2: Realtek Dell_Monitor_IR_Webcam driver: uvcvideo type: USB
rev: 2.1 speed: 480 Mb/s lanes: 1 bus-ID: 2-1.6.3.3:9 chip-ID: 0bda:58fc
Display: server: X.Org v: 23.2.4 with: Xwayland v: 23.2.4
compositor: kwin_wayland driver: X: loaded: modesetting unloaded: fbdev,vesa
dri: swrast gpu: nouveau display-ID: T:10.0 screens: 1
Screen-1: 0 s-res: 1920x1080 s-dpi: 96
Monitor-1: DP-2 mapped: DP-1 model: Dell P2418HZm res: 1920x1080 dpi: 102
diag: 604mm (23.8")
API: EGL v: 1.5 platforms: device: 0 drv: nouveau device: 1 drv: swrast
gbm: drv: nouveau surfaceless: drv: nouveau wayland: drv: nouveau x11:
drv: swrast
API: OpenGL v: 4.5 vendor: mesa v: 23.3.3-3 glx-v: 1.4 es-v: 3.2
direct-render: yes renderer: llvmpipe (LLVM 17.0.6 256 bits)
device-ID: ffffffff:ffffffff
API: Vulkan v: 1.3.268 surfaces: xcb,xlib,wayland device: 0 type: cpu
driver: mesa llvmpipe device-ID: 10005:0000

...
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kernel 6.7.1 freezes in kde + wayland graphical environment
Posted: Jan 24, 24, 8:03 antdeveloper
 Status: Interested
Joined: 10 Mar 2023
Posts: 15
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I reported this bug:

bugzilla.kernel.org/show_bug.cgi?id=218417
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Posted: Jan 24, 24, 8:23 damentz
 Status: Assistant
Joined: 09 Sep 2008
Posts: 1122
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Wow, thanks for the quick work bisecting and discovering the commit. I'll get this revert into upstream Zen Kernel, next release of Liquorix should have it.
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Posted: Jan 24, 24, 11:01 damentz
 Status: Assistant
Joined: 09 Sep 2008
Posts: 1122
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Looks like Dave Airlie already has a fix for this issue: lore.kernel.org/all/20240123072538.1290035-1-airlied@gmail.com/

I reapplied the reverted commit and added Dave's change on top. Will be in next Liquorix release.
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Posted: Jan 26, 24, 18:18 damentz
 Status: Assistant
Joined: 09 Sep 2008
Posts: 1122
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Marking this issue as resolved as the latest kernel includes the upstream fix.
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[RESOLVED] kernel 6.7.1 freezes in kde + wayland graphical environment
Posted: Jan 28, 24, 22:52 antdeveloper
 Status: Interested
Joined: 10 Mar 2023
Posts: 15
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I updated to kernel 6.7.2-3-liquorix-amd64, I confirm that it works.
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