Messages in this thread | | | Date | Tue, 18 Feb 2020 12:48:21 +0100 | From | Dominik Brodowski <> | Subject | lockup on boot -- drm/i915/display: Force the state compute phase once to enable PSR |
| |
On Mon, Feb 17, 2020 at 10:08:52PM +0100, Boris Brezillon wrote: > 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").
A new bisect now points to
60c6a14b489b ("drm/i915/display: Force the state compute phase once to enable PSR").
Please note that bisecting this is quite a hassle, in particular due to various reverts in between and back-merges (such as ec027b33c8bb, which has two parents in "bad" state). As 60c6a14b489b does not revert cleanly, I can't test a revert on top of 5.6-rc2.
Thanks, Dominik
| |