Messages in this thread | | | Date | Fri, 14 May 2021 15:44:51 +0200 | From | Thomas Stein <> | Subject | Re: thinkpad x1 carbon display flickering after update to 5.12. good on 5.11.x (i915) |
| |
Yes, it does indeed! No flicker anymore. Thanks and cheers!
On 2021-05-14 14:34, Oleksandr Natalenko wrote: > Hello. > > On Fri, May 14, 2021 at 10:24:26AM +0200, Thomas Stein wrote: >> After upgrading to linux 5.12 the display on my X1 Carbon Gen 2 starts >> to >> flicker. Well actually it seems to turn off and on again and again. >> Here a >> link to a video a person posted who has the same issue as me >> obviousely. >> https://linuxove.com/thinkpad-x1-carbon-gen-3-display-flickering-on-linux-kernel-5-12/ >> >> This happens without having Xorg running too. So it can't be related >> to >> Xorg. The kernel boots and after a few seconds, the kernel messages >> scoll >> through, the flickering starts. Nothing special in dmesg. >> >> dmesg: >> >> himbeere@rather ~ $ dmesg | grep i915 >> [ 0.713595] i915 0000:00:02.0: vgaarb: deactivate vga console >> [ 0.720280] i915 0000:00:02.0: vgaarb: changed VGA decodes: >> olddecodes=io+mem,decodes=io+mem:owns=io+mem >> [ 0.741494] i915 0000:00:02.0: [drm] Panel advertises DPCD >> backlight >> support, but VBT disagrees. If your backlight controls don't work try >> booting with i915.enable_dpcd_backlight=1. If your machine needs this, >> please file a _new_ bug report on drm/i915, see >> https://gitlab.freedesktop.org/drm/intel/-/wikis/How-to-file-i915-bugs >> for >> details. >> [ 1.864837] [drm] Initialized i915 1.6.0 20201103 for 0000:00:02.0 >> on >> minor 0 >> [ 1.875907] fbcon: i915drmfb (fb0) is primary device >> [ 3.158255] i915 0000:00:02.0: [drm] fb0: i915drmfb frame buffer >> device >> himbeere@rather ~ $ >> >> Downgrading to 5.11 solves the issue for me. Any ideas? > > Does [1] fix your issue? > > [1] > https://cgit.freedesktop.org/drm-tip/patch/?id=acca7762eb71bc05a8f28d29320d193150051f79
| |