It only took a week of bisecting to track down the kernel regression:
fe0f1e3bfdfeb53e18f1206aea4f40b9bd1f291c is the first bad commit
commit fe0f1e3bfdfeb53e18f1206aea4f40b9bd1f291c
Author: Ville Syrjälä <ville.syrj...@linux.intel.com>
Date: Thu Oct 1 18:16:35 2020 +0300
drm/i915: Shut down displays gracefully on reboot
Implement the pci .shutdown() hook in order to quiesce the
hardware prior to reboot. The main purpose here is to turn
all displays off. Some displays/other drivers tend to get
confused if the state after reboot isn't exactly as they
expected.
One specific example was the Dell UP2414Q in MST mode.
It would require me to pull the power cord after a reboot
or else it would just not come back to life. Sadly I don't
have that at hand anymore so not sure if it's still
misbehaving without the graceful shutdown, or if we
managed to fix something else since I last tested it.
For good measure we do a gem suspend as well, so that
we match the suspend flow more closely. Also stopping
all DMA and whatnot is probably a good idea for kexec.
I would expect that some kind of GT reset happens on
normal reboot so probably not totally necessary there.
v2: Use the pci .shutdown() hook instead of a reboot notifier (Lukas)
Do the gem suspend for kexec (Chris)
Cc: Lukas Wunner <lu...@wunner.de>
Cc: Chris Wilson <ch...@chris-wilson.co.uk>
Signed-off-by: Ville Syrjälä <ville.syrj...@linux.intel.com>
Link:
https://patchwork.freedesktop.org/patch/msgid/20201001151640.14590-1-ville.syrj...@linux.intel.com
Reviewed-by: Jani Nikula <jani.nik...@intel.com>
Reviewed-by: Chris Wilson <ch...@chris-wilson.co.uk>
drivers/gpu/drm/i915/i915_drv.c | 16 ++++++++++++++++
drivers/gpu/drm/i915/i915_drv.h | 1 +
drivers/gpu/drm/i915/i915_pci.c | 8 ++++++++
3 files changed, 25 insertions(+)
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You received this bug notification because you are a member of Kernel
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https://bugs.launchpad.net/bugs/1923335
Title:
[i915] At shutdown the spinner logo disappears and a second later it
comes back frozen for a while (in kernel 5.11 and later)
Status in linux package in Ubuntu:
Won't Fix
Status in plymouth package in Ubuntu:
Triaged
Status in plymouth package in Fedora:
Unknown
Bug description:
At shutdown the spinner logo disapear and a scond later it comes back and
stay for 15sec. When I remove "splash" from the grub commandline the shutdown
is fast (no extra 15 sec.). I can't find any hints in the log. It seem to
happen after the log stopped.
---
ProblemType: Bug
ApportVersion: 2.20.11-0ubuntu62
Architecture: amd64
BootLog: Error: [Errno 13] Keine Berechtigung: '/var/log/boot.log'
CasperMD5CheckResult: unknown
CurrentDesktop: ubuntu:GNOME
DefaultPlymouth: /usr/share/plymouth/themes/bgrt/bgrt.plymouth
DistroRelease: Ubuntu 21.04
InstallationDate: Installed on 2021-01-29 (71 days ago)
InstallationMedia: Ubuntu 21.04 "Hirsute Hippo" - Alpha amd64 (20210129)
Lsusb:
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 003: ID 8087:0a2b Intel Corp. Bluetooth wireless interface
Bus 001 Device 002: ID 0bda:568c Realtek Semiconductor Corp. Integrated
Webcam HD
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: Dell Inc. Latitude 5580
Package: plymouth 0.9.5-0ubuntu3
PackageArchitecture: amd64
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.11.0-13-generic
root=UUID=469b1c18-e632-4872-a47c-7b36bce081dc ro quiet splash vt.handoff=7
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.11.0-13-generic
root=UUID=469b1c18-e632-4872-a47c-7b36bce081dc ro quiet splash vt.handoff=7
ProcVersionSignature: Ubuntu 5.11.0-13.14-generic 5.11.7
Tags: wayland-session hirsute
TextPlymouth: /usr/share/plymouth/themes/ubuntu-text/ubuntu-text.plymouth
Uname: Linux 5.11.0-13-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin lxd plugdev sambashare sudo
_MarkForUpload: True
dmi.bios.date: 09/25/2020
dmi.bios.release: 1.18
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 1.18.2
dmi.board.name: 00C013
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 10
dmi.chassis.vendor: Dell Inc.
dmi.modalias:
dmi:bvnDellInc.:bvr1.18.2:bd09/25/2020:br1.18:svnDellInc.:pnLatitude5580:pvr:rvnDellInc.:rn00C013:rvrA00:cvnDellInc.:ct10:cvr:
dmi.product.family: Latitude
dmi.product.name: Latitude 5580
dmi.product.sku: 07A8
dmi.sys.vendor: Dell Inc.
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