Public bug reported:
i915 GuC submission disabled on Comet Lake i3-10100 preventing VA-API
hardware acceleration
System: Intel Core i3-10100 with UHD Graphics 630 (PCI ID 9BC8)
Kernel: 6.14.0-37-generic (Ubuntu 25.04)
Driver: intel-media-va-driver-non-free 25.1.2
Issue:
- Kernel loads i915 driver and firmware successfully
- HuC firmware authenticates (cml_huc_4.0.0.bin)
- GuC firmware loads (cml_guc_70.1.1.bin) but submission remains DISABLED
- Kernel ignores i915.enable_guc=2 parameter
- Kernel reports "unknown parameter 'enable_guc_submission' ignored"
- Both iHD and i965 VA-API drivers fail initialization
- OpenGL falls back to llvmpipe software rendering
Expected behavior:
- GuC submission should be enabled with enable_guc=2
- VA-API should initialize for hardware video acceleration
This is a regression preventing hardware acceleration on Comet Lake
integrated graphics.
ProblemType: Bug
DistroRelease: Ubuntu 25.04
Package: linux-image-6.14.0-37-generic 6.14.0-37.37
ProcVersionSignature: Ubuntu 6.14.0-37.37-generic 6.14.11
Uname: Linux 6.14.0-37-generic x86_64
ApportVersion: 2.32.0-0ubuntu5.3
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: bukwas 2947 F.... wireplumber
/dev/snd/seq: bukwas 2939 F.... pipewire
CasperMD5CheckResult: pass
CurrentDesktop: GNOME
Date: Sun Dec 14 23:01:25 2025
InstallationDate: Installed on 2025-04-27 (231 days ago)
InstallationMedia: Ubuntu 25.04 "Plucky Puffin" - Release amd64 (20250415.3)
Lsusb:
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
MachineType: Dell Inc. OptiPlex 3080
ProcEnviron:
LANG=en_US.UTF-8
PATH=(custom, no user)
SHELL=/bin/bash
TERM=xterm-256color
XDG_RUNTIME_DIR=<set>
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-6.14.0-37-generic
root=UUID=f98d73b6-f184-45e5-b8d3-cc22cdfea298 ro quiet splash
i915.enable_guc=2 i915.enable_guc_submission=1
crashkernel=2G-4G:320M,4G-32G:512M,32G-64G:1024M,64G-128G:2048M,128G-:4096M
vt.handoff=7
PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No
PulseAudio daemon running, or not running as session daemon.
RelatedPackageVersions:
linux-restricted-modules-6.14.0-37-generic N/A
linux-backports-modules-6.14.0-37-generic N/A
linux-firmware 20250317.git1d4c88ee-0ubuntu1.11
RfKill:
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 07/31/2025
dmi.bios.release: 2.33
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 2.33.0
dmi.board.name: 0HMF7C
dmi.board.vendor: Dell Inc.
dmi.board.version: A01
dmi.chassis.type: 3
dmi.chassis.vendor: Dell Inc.
dmi.modalias:
dmi:bvnDellInc.:bvr2.33.0:bd07/31/2025:br2.33:svnDellInc.:pnOptiPlex3080:pvr:rvnDellInc.:rn0HMF7C:rvrA01:cvnDellInc.:ct3:cvr:sku09A8:
dmi.product.family: OptiPlex
dmi.product.name: OptiPlex 3080
dmi.product.sku: 09A8
dmi.sys.vendor: Dell Inc.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug plucky
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https://bugs.launchpad.net/bugs/2136090
Title:
i915 GuC submission disabled on Comet Lake i3-10100 preventing VA-API
hardware acceleration
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