Messages in this thread | | | Date | Mon, 17 Feb 2020 22:08:52 +0100 | From | Boris Brezillon <> | Subject | Re: drm/bridge and lockup on boot |
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On Mon, 17 Feb 2020 21:09:42 +0100 Dominik Brodowski <linux@dominikbrodowski.net> wrote:
> On my old Dell XPS 13 laptop with > > 00:00.0 Host bridge: Intel Corporation Broadwell-U Host Bridge -OPI (rev 09) > 00:02.0 VGA compatible controller: Intel Corporation HD Graphics 5500 (rev 09) (prog-if 00 [VGA controller]) > > booting 5.6-rc1 and -rc2 fails after the dmesg line > > fb0: switching to inteldrmfb from simple > > while the next lines should be something like (v5.5): > > Console: switching to colour dummy device 80x25 > i915 0000:00:02.0: vgaarb: deactivate vga console > [drm] ACPI BIOS requests an excessive sleep of 25000 ms, using 1500 ms instead > [drm] Supports vblank timestamp caching Rev 2 (21.10.2013). > [drm] Driver supports precise vblank timestamp query. > i915 0000:00:02.0: vgaarb: changed VGA decodes: olddecodes=io+mem,decodes=io+mem:owns=io+mem > > A git bisect lead to > > commit b86d895524ab ("drm/bridge: Add an ->atomic_check() hook")
This commit has been reverted: you should ignore any failures between b86d895524ab ("drm/bridge: Add an ->atomic_check() hook") and 099126352303 ("Revert "drm/bridge: Add a drm_bridge_state object").
> > as the first bad commit, as unlikely as that sounds. f7619a58ef92 is good, > as is bf046007641a, and 3cacb2086e41 is definitely broken on my setup. > Any ideas? > > Oh, and this might be the same issue as reported here: > > https://lore.kernel.org/lkml/99fb887f-4a1b-6c15-64a6-9d089773cdd4@4net.rs/ > > though I do not see such a warning, but nothing new once the line "fb0: switching > to inteldrmfb from simple" is printed. > > Thanks, > Dominik
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