On Tue Apr 14, 2026 at 05:20:45PM +1000, Jonathan Gray wrote:
> On Mon, Apr 06, 2026 at 03:09:39PM +0200, Rafael Sadowski wrote:
> > On Fri Apr 03, 2026 at 06:28:50PM +1100, Jonathan Gray wrote:
> > > On Fri, Apr 03, 2026 at 09:15:51AM +0200, Rafael Sadowski wrote:
> > > > As an alternative to my AMD T14, I have an Intel X13 Gen 5 here.
> > > > Unfortunately, the DRM isn't working. Is this a bug, or do we not
> > > > support this GPU?
> > >
> > > On Meteor Lake GuC submission sometimes does this from cold boot.
> > > It is not consistent.
> > >
> > > GuC submission has been disabled and enabled multiple times,
> > > the last was i915_driver.c rev 1.26
> >
> > I reverted i915_driver.c rev 1.26 and now my kernel stuck at boot
> > with:
> >
> > drm:pid0:gen8_engine_reset_prepare *ERROR* [drm] *ERROR* GT1: other'6 rest
> > request timed out:
> > {request: 00000001, REST_CTL: 00000001}
>
> Ah yes, also requires disabling guc tlb invalidation.
>
> You will see dmesg noise along the lines of:
>
> drm:pid78281:gsc_fw_load *ERROR* [drm] *ERROR* GT1: Request submission for
> GSC load failed 0xffffffffffffffc4e
> drm:pid78281:intel_uc_fw_mark_load_failed *ERROR* [drm] *ERROR* GT1: Failed
> to load GSC firmware i915/mtl_gsc_1.bin 0xffffffffffffffc4e
> i915_capture_error_state: stub
> drm:pid92175:__intel_engine_reset_bh *NOTICE* [drm] Resetting other0 for
> stopped heartbeat on other0
> drm:pid92175:gen8_engine_reset_prepare *ERROR* [drm] *ERROR* GT1: other0
> reset request timed out: {request: 00000001, RESET_CTL: 00000001}
> drm:pid92175:intel_gt_reset *NOTICE* [drm] GT1: Resetting chip for stopped
> heartbeat on other0
> drm:pid92175:gen8_engine_reset_prepare *ERROR* [drm] *ERROR* GT1: other0
> reset request timed out: {request: 00000001, RESET_CTL: 00000001}
> drm:pid92175:gen8_engine_reset_prepare *ERROR* [drm] *ERROR* GT1: other0
> reset request timed out: {request: 00000001, RESET_CTL: 00000001}
>
> and perhaps some rendering problems. Which is part of why GuC
> submission was enabled on Meteor Lake.
dmesg drm output with this diff:
drm:pid50343:gsc_fw_load *ERROR* [drm] *ERROR* GT1: Request submission for GSC
load failed 0xffffffffffffffc4e
drm:pid50343:intel_uc_fw_mark_load_failed *ERROR* [drm] *ERROR* GT1: Failed to
load GSC firmware i915/mtl_gsc_1.bin 0xffffffffffffffc4e
i915_capture_error_state: stub
drm:pid339:__intel_engine_reset_bh *NOTICE* [drm] Resetting other0 for stopped
heartbeat on other0
drm:pid339:gen8_engine_reset_prepare *ERROR* [drm] *ERROR* GT1: other0 reset
request timed out: {request: 00000001, RESET_CTL: 00000001}
drm:pid339:intel_gt_reset *NOTICE* [drm] GT1: Resetting chip for stopped
heartbeat on other0
drm:pid339:gen8_engine_reset_prepare *ERROR* [drm] *ERROR* GT1: other0 reset
request timed out: {request: 00000001, RESET_CTL: 00000001}
drm:pid339:gen8_engine_reset_prepare *ERROR* [drm] *ERROR* GT1: other0 reset
request timed out: {request: 00000001, RESET_CTL: 00000001}
but it reliably initialises the GPU:
libva info: VA-API version 1.22.0
libva info: Trying to open /usr/X11R6/lib/modules/dri/iHD_drv_video.so
libva info: Trying to open /usr/local/lib/dri/iHD_drv_video.so
libva info: Found init function __vaDriverInit_1_22
libva info: va_openDriver() returns 0
Trying display: x11
vainfo: VA-API version: 1.22 (libva 2.22.0)
vainfo: Driver version: Intel iHD driver for Intel(R) Gen Graphics - 25.3.4
(OpenBSD)
vainfo: Supported profile and entrypoints
VAProfileNone : VAEntrypointVideoProc
VAProfileMPEG2Simple : VAEntrypointVLD
VAProfileMPEG2Main : VAEntrypointVLD
VAProfileH264Main : VAEntrypointVLD
VAProfileH264Main : VAEntrypointEncSlice
VAProfileH264High : VAEntrypointVLD
VAProfileH264High : VAEntrypointEncSlice
VAProfileJPEGBaseline : VAEntrypointVLD
VAProfileJPEGBaseline : VAEntrypointEncPicture
VAProfileH264ConstrainedBaseline: VAEntrypointVLD
VAProfileH264ConstrainedBaseline: VAEntrypointEncSlice
VAProfileVP8Version0_3 : VAEntrypointVLD
VAProfileHEVCMain : VAEntrypointVLD
VAProfileHEVCMain : VAEntrypointEncSlice
VAProfileHEVCMain10 : VAEntrypointVLD
VAProfileHEVCMain10 : VAEntrypointEncSlice
VAProfileVP9Profile0 : VAEntrypointVLD
VAProfileVP9Profile0 : VAEntrypointEncSlice
VAProfileVP9Profile1 : VAEntrypointVLD
VAProfileVP9Profile1 : VAEntrypointEncSlice
VAProfileVP9Profile2 : VAEntrypointVLD
VAProfileVP9Profile2 : VAEntrypointEncSlice
VAProfileVP9Profile3 : VAEntrypointVLD
VAProfileVP9Profile3 : VAEntrypointEncSlice
VAProfileHEVCMain12 : VAEntrypointVLD
VAProfileHEVCMain422_10 : VAEntrypointVLD
VAProfileHEVCMain422_12 : VAEntrypointVLD
VAProfileHEVCMain444 : VAEntrypointVLD
VAProfileHEVCMain444 : VAEntrypointEncSlice
VAProfileHEVCMain444_10 : VAEntrypointVLD
VAProfileHEVCMain444_10 : VAEntrypointEncSlice
VAProfileHEVCMain444_12 : VAEntrypointVLD
VAProfileHEVCSccMain : VAEntrypointVLD
VAProfileHEVCSccMain : VAEntrypointEncSlice
VAProfileHEVCSccMain10 : VAEntrypointVLD
VAProfileHEVCSccMain10 : VAEntrypointEncSlice
VAProfileHEVCSccMain444 : VAEntrypointVLD
VAProfileHEVCSccMain444 : VAEntrypointEncSlice
VAProfileAV1Profile0 : VAEntrypointVLD
VAProfileAV1Profile0 : VAEntrypointEncSlice
VAProfileHEVCSccMain444_10 : VAEntrypointVLD
VAProfileHEVCSccMain444_10 : VAEntrypointEncSlice
>
> Index: sys/dev/pci/drm/i915/i915_driver.c
> ===================================================================
> RCS file: /cvs/src/sys/dev/pci/drm/i915/i915_driver.c,v
> diff -u -p -r1.29 i915_driver.c
> --- sys/dev/pci/drm/i915/i915_driver.c 19 Mar 2026 23:04:02 -0000
> 1.29
> +++ sys/dev/pci/drm/i915/i915_driver.c 14 Apr 2026 06:57:41 -0000
> @@ -2322,11 +2322,10 @@ inteldrm_attach(struct device *parent, s
>
> dev_priv->display = display;
>
> - /*
> - * with GuC submission, init sometimes fails on Alder Lake-P
> - * too early for IS_ALDERLAKE_P
> - */
> - if (info->platform == INTEL_ALDERLAKE_P)
> + /* uc_expand_default_options() with no GuC submission */
> + if (GRAPHICS_VER(dev_priv) >= 12 &&
> + (INTEL_INFO(dev_priv)->platform != INTEL_TIGERLAKE) &&
> + (INTEL_INFO(dev_priv)->platform != INTEL_ROCKETLAKE))
> dev_priv->params.enable_guc = ENABLE_GUC_LOAD_HUC;
>
> mmio_bar = (GRAPHICS_VER(dev_priv) == 2) ? 0x14 : 0x10;
> Index: sys/dev/pci/drm/i915/i915_pci.c
> ===================================================================
> RCS file: /cvs/src/sys/dev/pci/drm/i915/i915_pci.c,v
> diff -u -p -r1.25 i915_pci.c
> --- sys/dev/pci/drm/i915/i915_pci.c 9 Mar 2026 23:58:01 -0000 1.25
> +++ sys/dev/pci/drm/i915/i915_pci.c 14 Apr 2026 07:00:42 -0000
> @@ -771,7 +771,7 @@ static const struct intel_device_info mt
> .has_flat_ccs = 0,
> .has_gmd_id = 1,
> .has_guc_deprivilege = 1,
> - .has_guc_tlb_invalidation = 1,
> + .has_guc_tlb_invalidation = 0,
> .has_llc = 0,
> .has_mslice_steering = 0,
> .has_snoop = 1,
