Re: ✗ i915.CI.BAT: failure for drm/i915/dp: Fix panel replay in DSC mode (rev2)

[Imre Deak <imre.deak@intel.com>]

On Fri, Oct 17, 2025 at 12:43:36PM +0300, Grabski, Mateusz wrote:
> Hello, Imre
> 
> I will queue shards for you.

Thanks.

> Regards
> Mateusz
> 
> -----Original Message-----
> From: I915-ci-infra <i915-ci-infra-bounces@lists.freedesktop.org> On Behalf Of Imre Deak
> Sent: Friday, October 17, 2025 11:31 AM
> To: I915-ci-infra@lists.freedesktop.org
> Cc: intel-gfx@lists.freedesktop.org
> Subject: Re: ✗ i915.CI.BAT: failure for drm/i915/dp: Fix panel replay in DSC mode (rev2)
> 
> Hi CI team,
> 
> the failure is unrelated to the changes, see below for details, could you please forward the patchset to testing on shards as well?
> 
> On Wed, Oct 15, 2025 at 08:24:57PM +0000, Patchwork wrote:
> > == Series Details ==
> > 
> > Series: drm/i915/dp: Fix panel replay in DSC mode (rev2)
> > URL   : https://patchwork.freedesktop.org/series/155587/
> > State : failure
> > 
> > == Summary ==
> > 
> > CI Bug Log - changes from CI_DRM_17368 -> Patchwork_155587v2 
> > ====================================================
> > 
> > Summary
> > -------
> > 
> >   **FAILURE**
> > 
> >   Serious unknown changes coming with Patchwork_155587v2 absolutely need to be
> >   verified manually.
> >   
> >   If you think the reported changes have nothing to do with the changes
> >   introduced in Patchwork_155587v2, please notify your bug team (I915-ci-infra@lists.freedesktop.org) to allow them
> >   to document this new failure mode, which will reduce false positives in CI.
> > 
> >   External URL: 
> > https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_155587v2/index.html
> > 
> > Participating hosts (40 -> 38)
> > ------------------------------
> > 
> >   Missing    (2): fi-snb-2520m bat-adls-6 
> > 
> > Possible new issues
> > -------------------
> > 
> >   Here are the unknown changes that may have been introduced in Patchwork_155587v2:
> > 
> > ### IGT changes ###
> > 
> > #### Possible regressions ####
> > 
> >   * igt@gem_sync@basic-each:
> >     - fi-kbl-guc:         [PASS][1] -> [INCOMPLETE][2]
> >    [1]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_17368/fi-kbl-guc/igt@gem_sync@basic-each.html
> >    [2]: 
> > https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_155587v2/fi-kbl-guc
> > /igt@gem_sync@basic-each.html
> 
> There doesn't seem to be any display connected to fi-kbl-guc, so the display specific changes in the patchset are unrelated to the failure.
> 
> It took me a while to determine that no display is connected. Is an empty "i915_display_info0" linked on the CI result page supposed to indicat this always? Could you indicate in a more obvious way that "No display connected" on the results page?
> 
> The failure imo, is either due to a network connection issue (no WARNs, errors in the log, dmesg ending with a flood of 0 bytes read) or some GFX device DC6 -> DC0 transition or some GFX GEM related issue, see more below. There are no pstore or other post-mortem logs available, so it's impossible to know the root cause for sure. Putting much more effort into making such logs available everywhere would be really appreciated.
> 
> The fact that the connection is lost while the system is active, so not around system suspend/resume (where network device failures were typical in the past) makes the likelihood of a network device failure lower.
> 
> I see the GFX device being in DC6 when the connection is lost, so it's possible the machine hangs when GFX is trying to exit to DC0.
> 
> A recent similar connection lost failure during a GEM/GT test on the same fi-kbl-guc machine is:
> https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_154881v1/fi-kbl-guc/igt@i915_selftest@live@requests.html
> 
> > Known issues
> > ------------
> > 
> >   Here are the changes found in Patchwork_155587v2 that come from known issues:
> > 
> > ### IGT changes ###
> > 
> > #### Issues hit ####
> > 
> >   * igt@dmabuf@all-tests:
> >     - bat-apl-1:          [PASS][3] -> [ABORT][4] ([i915#12904]) +1 other test abort
> >    [3]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_17368/bat-apl-1/igt@dmabuf@all-tests.html
> >    [4]: 
> > https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_155587v2/bat-apl-1/
> > igt@dmabuf@all-tests.html
> > 
> >   * igt@i915_selftest@live@late_gt_pm:
> >     - fi-cfl-8109u:       [PASS][5] -> [DMESG-WARN][6] ([i915#13735]) +80 other tests dmesg-warn
> >    [5]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_17368/fi-cfl-8109u/igt@i915_selftest@live@late_gt_pm.html
> >    [6]: 
> > https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_155587v2/fi-cfl-810
> > 9u/igt@i915_selftest@live@late_gt_pm.html
> > 
> >   * igt@i915_selftest@live@workarounds:
> >     - bat-dg2-9:          [PASS][7] -> [DMESG-FAIL][8] ([i915#12061]) +1 other test dmesg-fail
> >    [7]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_17368/bat-dg2-9/igt@i915_selftest@live@workarounds.html
> >    [8]: https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_155587v2/bat-dg2-9/igt@i915_selftest@live@workarounds.html
> >     - bat-arls-6:         [PASS][9] -> [DMESG-FAIL][10] ([i915#12061]) +1 other test dmesg-fail
> >    [9]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_17368/bat-arls-6/igt@i915_selftest@live@workarounds.html
> >    [10]: 
> > https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_155587v2/bat-arls-6
> > /igt@i915_selftest@live@workarounds.html
> > 
> >   * igt@kms_pipe_crc_basic@read-crc:
> >     - fi-cfl-8109u:       [PASS][11] -> [DMESG-WARN][12] ([i915#13735] / [i915#13890]) +49 other tests dmesg-warn
> >    [11]: https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_17368/fi-cfl-8109u/igt@kms_pipe_crc_basic@read-crc.html
> >    [12]: 
> > https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_155587v2/fi-cfl-810
> > 9u/igt@kms_pipe_crc_basic@read-crc.html
> > 
> >   
> >   [i915#12061]: https://gitlab.freedesktop.org/drm/i915/kernel/-/issues/12061
> >   [i915#12904]: https://gitlab.freedesktop.org/drm/i915/kernel/-/issues/12904
> >   [i915#13735]: https://gitlab.freedesktop.org/drm/i915/kernel/-/issues/13735
> >   [i915#13890]: 
> > https://gitlab.freedesktop.org/drm/i915/kernel/-/issues/13890
> > 
> > 
> > Build changes
> > -------------
> > 
> >   * Linux: CI_DRM_17368 -> Patchwork_155587v2
> > 
> >   CI-20190529: 20190529
> >   CI_DRM_17368: 69ca30df000b382e7657f300148be505083377f2 @ git://anongit.freedesktop.org/gfx-ci/linux
> >   IGT_8585: 8585
> >   Patchwork_155587v2: 69ca30df000b382e7657f300148be505083377f2 @ 
> > git://anongit.freedesktop.org/gfx-ci/linux
> > 
> > == Logs ==
> > 
> > For more details see: 
> > https://intel-gfx-ci.01.org/tree/drm-tip/Patchwork_155587v2/index.html