Public bug reported:
After update to Ubuntu 25.10, nouveau fails to initialize, causing the
system to run on software rendering. On the same machine, nouveau worked
well on Ubuntu 25.04, providing 3d acceleration.
There are the following lines in dmesg:
> dmesg|grep -i nouveau
[ 13.917807] nouveau: detected PR support, will not use DSM
[ 13.917906] nouveau 0000:01:00.0: NVIDIA AD107 (197000a1)
[ 13.918350] nouveau 0000:01:00.0: gsp ctor failed: -2
[ 13.920098] nouveau 0000:01:00.0: probe with driver nouveau failed with
error -2
> inxi -G
Graphics:
Device-1: NVIDIA AD107M [GeForce RTX 4060 Max-Q / Mobile] driver: N/A
Device-2: Chicony Integrated Camera driver: uvcvideo type: USB
Display: wayland server: X.Org v: 24.1.6 with: Xwayland v: 24.1.6
compositor: gnome-shell v: 49.rc driver: X: loaded: fbdev,nouveau
unloaded: modesetting,vesa dri: swrast gpu: N/A resolution: 1920x1080~60Hz
API: EGL v: 1.5 drivers: swrast platforms: wayland,x11,surfaceless,device
API: OpenGL v: 4.5 vendor: mesa v: 25.2.3-1ubuntu1 renderer: llvmpipe
(LLVM 20.1.8 256 bits)
Info: Tools: api: eglinfo,glxinfo x11: xdriinfo, xdpyinfo, xprop, xrandr
I've tried nouveau.config=NvGspRm=0, but that changed the error code from -2 to
-22.
ProblemType: Bug
DistroRelease: Ubuntu 25.10
Package: linux-image-6.17.0-4-generic 6.17.0-4.4
ProcVersionSignature: Ubuntu 6.17.0-4.4-generic 6.17.0-rc5
Uname: Linux 6.17.0-4-generic x86_64
ApportVersion: 2.33.1-0ubuntu2
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: mavi 3957 F.... wireplumber
/dev/snd/controlC2: mavi 3957 F.... wireplumber
/dev/snd/controlC0: mavi 3957 F.... wireplumber
/dev/snd/seq: mavi 3938 F.... pipewire
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Wed Sep 24 16:39:55 2025
InstallationDate: Installed on 2025-09-15 (9 days ago)
InstallationMedia: Ubuntu-Server 25.04 "Plucky Puffin" - Release amd64
(20250415.2)
MachineType: LENOVO 83JC
ProcFB: 0 simpledrmdrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-6.17.0-4-generic
root=/dev/mapper/vg0-lv--0 ro
crashkernel=2G-4G:320M,4G-32G:512M,32G-64G:1024M,64G-128G:2048M,128G-:4096M
RelatedPackageVersions:
firmware-sof N/A
linux-firmware 20250901.git993ff19b-0ubuntu1
SourcePackage: linux
UpgradeStatus: Upgraded to questing on 2025-09-24 (0 days ago)
dmi.bios.date: 06/26/2025
dmi.bios.release: 1.25
dmi.bios.vendor: LENOVO
dmi.bios.version: PQCN25WW
dmi.board.asset.tag: NO Asset Tag
dmi.board.name: LNVNB161216
dmi.board.vendor: LENOVO
dmi.board.version: SDK0T76461 WIN
dmi.chassis.asset.tag: NO Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: LOQ 15ARP9
dmi.ec.firmware.release: 1.25
dmi.modalias:
dmi:bvnLENOVO:bvrPQCN25WW:bd06/26/2025:br1.25:efr1.25:svnLENOVO:pn83JC:pvrLOQ15ARP9:rvnLENOVO:rnLNVNB161216:rvrSDK0T76461WIN:cvnLENOVO:ct10:cvrLOQ15ARP9:skuLENOVO_MT_83JC_BU_idea_FM_LOQ15ARP9:
dmi.product.family: LOQ 15ARP9
dmi.product.name: 83JC
dmi.product.sku: LENOVO_MT_83JC_BU_idea_FM_LOQ 15ARP9
dmi.product.version: LOQ 15ARP9
dmi.sys.vendor: LENOVO
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug questing wayland-session
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https://bugs.launchpad.net/bugs/2125584
Title:
nouveau fails to load with gsp ctor failed: -2 and reverts to software
rendering
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