#1072063 linux-image-6.8.11-amd64: one of the external monitors randomly blank for 2-3 seconds with 6.8 kernels

Package:
src:linux
Source:
src:linux
Submitter:
Vincent Lefevre
Date:
2026-01-10 11:03:57 UTC
Severity:
normal
Tags:
#1072063#5
Date:
2024-05-28 00:36:00 UTC
From:
To:
I have 2 external monitors with my Dell Precision 5570 laptop, connected
via the Thunderbolt WD22TB4 dock. With the linux-image-6.8.9-amd64 kernel,
then with linux-image-6.8.11-amd64, one of these monitors (not always the
same one) randomly gets blank, several times a day. When I downgraded to
the 6.7.12 kernel before the upgrade to 6.8.11, the problem disappeared.
So this is really an issue with the 6.8 kernels.

The issue seems to be the same as
https://github.com/pop-os/pop/issues/3261
(specific to a 6.8 kernel, randomly blank for a few seconds).

With almost the same hardware, but apparently a more serious problem:
https://lore.kernel.org/lkml/ecc8bd98-0dac-4f17-abb3-ebc8b10fd0f7@leemhuis.info/T/
which mentions

https://gitlab.freedesktop.org/drm/i915/kernel/-/issues/10637

but this is actually unrelated (there was a firmware bug, but
I already have the fixed version "Fixed the issue where a black
screen is displayed intermittently when the external monitor is
connected to the Dell Dock WD19, WD19TB, and WD22TB4.- Improved
the display compatibility of WD19, WD22, and HD22 series dock
between systems and monitors."). I new firmware has been available
for several days, but I haven't upgraded yet.

I can also see various issues reported about 6.8 and dual monitor
setup.
#1072063#10
Date:
2024-06-20 15:58:39 UTC
From:
To:
removing "linux-image-6.8.11-amd64" since this is not specific to
this version.
#1072063#19
Date:
2024-06-29 09:13:23 UTC
From:
To:
This bug is still present in linux-image-6.9.7-amd64 6.9.7-1: one
of my 2 external monitors (not always the same one) gets blank for
a short period. There's nothing related in the journalctl output.

I recall that reverting to linux-image-6.7.12-amd64 6.7.12-1 makes
the problem disappear.
#1072063#28
Date:
2024-07-19 15:13:30 UTC
From:
To:
With the linux-image-6.9.8-amd64 6.9.8-1 kernel, the problem occurred
on 2024-07-09, a first time with only one blanked monitor and a second
time with both monitors blanked.

I was off from 2024-07-10 to 2024-07-19 (today) in the morning.

With the linux-image-6.9.9-amd64 6.9.9-1 kernel, the problem has just
occurred (2024-07-19), a few hours after its installation.
#1072063#37
Date:
2024-07-24 11:01:53 UTC
From:
To:
With a desktop machine (Dell Precision Tower 7810) that has just one
monitor, I've noticed a couple of times that the monitor blanked for
a fraction of second. I've never noticed that in the past. I don't
know whether this is related...
#1072063#42
Date:
2024-07-31 18:21:12 UTC
From:
To:
Hi Vincent,
second

Could you please report this upstream following
<https://drm.pages.freedesktop.org/intel-docs/how-to-file-i915-bugs.html>?
(We don't have any patches to the i915 driver or DRM core, so I don't
think it matters that you are running a distribution kernel.)

Ben.
#1072063#47
Date:
2024-08-02 14:06:13 UTC
From:
To:
Control: found -1 6.9.12-1
Control: forwarded -1 https://gitlab.freedesktop.org/drm/i915/kernel/-/issues/11821
#1072063#62
Date:
2026-01-10 10:10:41 UTC
From:
To:
Es gibt eine Familienspende in Höhe von 1.850.000,00 USD von Cheng Charlie
Saephan. Bitte antworten Sie für weitere Informationen. Denken Sie daran,
Ihrer Familie und den Bedürftigen in Ihrer Umgebung Gutes zu tun.

Dies ist bereits der zweite Versuch, Sie zu erreichen. Bitte antworten Sie
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#1072063#67
Date:
2026-01-10 10:10:41 UTC
From:
To:
Es gibt eine Familienspende in Höhe von 1.850.000,00 USD von Cheng Charlie
Saephan. Bitte antworten Sie für weitere Informationen. Denken Sie daran,
Ihrer Familie und den Bedürftigen in Ihrer Umgebung Gutes zu tun.

Dies ist bereits der zweite Versuch, Sie zu erreichen. Bitte antworten Sie
für weitere Details.