Dev1 Galaxy Forum / nouveau regression on GK208B / GT 730 after kernel update

Re: nouveau regression on GK208B / GT 730 after kernel update

dummy@example.com (lynch9) — Sun, 29 Mar 2026 21:13:37 +0000

Yea, I tried it but it did not work. Tested many configurations but it couldn't even survive glmark2 without crashing my session. Besides Firefox crashed every 5 min even when disabling hardware acceleration. I'll just wait until the maintainers solve the bug I guess. I don't really need a compositor either way ;P

Re: nouveau regression on GK208B / GT 730 after kernel update

dummy@example.com (Altoid) — Sun, 29 Mar 2026 18:17:43 +0000

Hello:

lynch9 wrote:

... disabling the XFCE compositor ...

Surprise!!! 8^P

XFCE native compositor is crap.
Try picom, works great.
https://pkginfo.devuan.org/cgi-bin/poli … .61.71.165

See this thread: https://dev1galaxy.org/viewtopic.php?id=6657
The TL;DR is here: https://dev1galaxy.org/viewtopic.php?pid=50429#p50429

Best,

Re: nouveau regression on GK208B / GT 730 after kernel update

dummy@example.com (lynch9) — Sun, 29 Mar 2026 14:20:01 +0000

Small update: disabling the XFCE compositor seems to avoid the problem entirely here lol
At least on this machine, the regression looks related to compositing path rather than general display output.

nouveau regression on GK208B / GT 730 after kernel update

dummy@example.com (lynch9) — Sun, 29 Mar 2026 14:06:55 +0000

Posting this here for visibility. I already reported it against src linux and tagged it upstream.

After a kernel update on Devuan Excalibur, nouveau started misbehaving on my system with an NVIDIA GK208B / GeForce GT 730 [10de:1287]. Before that, the same machine was usable with nouveau.

What I am seeing is screen artifacts/pixelation, session instability, occasional return to login, and repeated nouveau GR/TRAP errors. The messages involve both Xorg and xfwm4, with repeated MULTIPLE_WARP_ERRORS and ILLEGAL_INSTR_ENCODING.

Hardware info:

01:00.0 VGA compatible controller [0300]: NVIDIA Corporation GK208B [GeForce GT 730] [10de:1287] (rev a1)
Subsystem: Gigabyte Technology Co., Ltd Device [1458:3693]
Kernel driver in use: nouveau
Kernel modules: nouveau

Typical log pattern:

nouveau ... gr: TRAP
nouveau ... [MULTIPLE_WARP_ERRORS]
nouveau ... [ILLEGAL_INSTR_ENCODING]

One example from dmesg:

[  588.244769] nouveau 0000:01:00.0: gr: TRAP ch 4 [007fa3c000 xfwm4[2583]]
[  588.244777] nouveau 0000:01:00.0: gr: GPC0/TPC0/MP trap: global 00000004 [MULTIPLE_WARP_ERRORS] warp 0009 [ILLEGAL_INSTR_ENCODING]

Right now I am testing with the XFCE compositor disabled to see whether that makes the session a bit less fragile.

If anyone else is on Excalibur with a Kepler-era NVIDIA card and nouveau, I’d be interested to hear whether recent kernels are behaving the same way for you.