** Description changed:
- On an HP x360 Spectre (i7-8565U WhiskeyLake-U GT2 [UHD Graphics 620]),
- after upgrading to 22.04 from 21.10, the display goes to some flickering
- lines in black and grey or colors (remember the artifacts on Amstrad CPC
- or C64 when loading from a tape? Same here...).
+ On an HP x360 Spectre (i7-8565U WhiskeyLake-U GT2 [UHD Graphics 620]), after
upgrading from 21.10 to 22.04, at boot time just after grub, the kernel
displays some errors messages then goes to black.
+ I configure my machine with an encrypted filesystem and before it was going
to the splash screen and asking for the partition password.
+ If I type in the password, it seems to boot but the screen stays black
forever.
- After the initial grub menu, the kernel loads and boots. There are a few
- lines of log when the screen is in text mode. As soon as the plymouth
- screen comes in, the screen starts flickering massively. Nothing
- appeared on the screen except horizontal lines. I have an encrypted
- partition, so I type in the password and then the screen goes to
- flickering lines in color when Wayland starts.
-
- I tried different kernels:
- - 5.17.8: failed
- - 5.15.x: all failed (from Ubuntu 22.04)
- - 5.13.19: works and back to normal
+ It seems the bug started with the 5.15.x series. I have been able, using
+ "mainline" to update up to 5.14.21. After this version the problem appears.
Before it's fine.
I found the following errors in the logs:
* i915 0000:00:02.0: [drm] *ERROR* Atomic update failure on pipe A
(start=43426 end=43427) time 300 us, min 2146, max 2159, scanline start 2131,
end 2171
* i915 0000:00:02.0: [drm] Finished loading DMC firmware
i915/kbl_dmc_ver1_04.bin (v1.4)
* i915 0000:00:02.0: [drm] [ENCODER:102:DDI B/PHY B] is disabled/in DSI mode
with an ungated DDI clock, gate it
* i915 0000:00:02.0: [drm] [ENCODER:113:DDI C/PHY C] is disabled/in DSI mode
with an ungated DDI clock, gate it
* i915 0000:00:02.0: [drm] *ERROR* CPU pipe A FIFO underrun
So the problem is > 5.13.x series
- I temporarily solved it by downgrading to 5.13.19 from ubuntu mainline
- on a newly updated ubuntu 22.04! But it seems the bug affects all the
- kernels.
-
It might be related to
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1958191
-
- Info:
- Description: Ubuntu 22.04 LTS
- Release: 22.04
-
- linux-image-5.15.0-30-generic:
- Installed: 5.15.0-30.31
- Candidate: 5.15.0-30.31
- Version table:
- *** 5.15.0-30.31 500
- 500 http://au.archive.ubuntu.com/ubuntu jammy-updates/main amd64
Packages
- 100 /var/lib/dpkg/status
** Changed in: linux (Ubuntu)
Status: Fix Released => New
** Summary changed:
- flickering and black screen from boot time, no more display after 22.04
upgrade
+ flickering and black screen after grub after 22.04 upgrade
--
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1973676
Title:
flickering and black screen after grub after 22.04 upgrade
Status in linux package in Ubuntu:
New
Bug description:
On an HP x360 Spectre (i7-8565U WhiskeyLake-U GT2 [UHD Graphics 620]), after
upgrading from 21.10 to 22.04, at boot time just after grub, the kernel
displays some errors messages then goes to black.
I configure my machine with an encrypted filesystem and before it was going
to the splash screen and asking for the partition password.
If I type in the password, it seems to boot but the screen stays black
forever.
It seems the bug started with the 5.15.x series. I have been able, using
"mainline" to update up to 5.14.21. After this version the problem appears.
Before it's fine.
I found the following errors in the logs:
* i915 0000:00:02.0: [drm] *ERROR* Atomic update failure on pipe A
(start=43426 end=43427) time 300 us, min 2146, max 2159, scanline start 2131,
end 2171
* i915 0000:00:02.0: [drm] Finished loading DMC firmware
i915/kbl_dmc_ver1_04.bin (v1.4)
* i915 0000:00:02.0: [drm] [ENCODER:102:DDI B/PHY B] is disabled/in DSI mode
with an ungated DDI clock, gate it
* i915 0000:00:02.0: [drm] [ENCODER:113:DDI C/PHY C] is disabled/in DSI mode
with an ungated DDI clock, gate it
* i915 0000:00:02.0: [drm] *ERROR* CPU pipe A FIFO underrun
So the problem is > 5.13.x series
It might be related to
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1958191
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1973676/+subscriptions
--
Mailing list: https://launchpad.net/~kernel-packages
Post to : kernel-packages@lists.launchpad.net
Unsubscribe : https://launchpad.net/~kernel-packages
More help : https://help.launchpad.net/ListHelp
