On Wed, Oct 22, 2025 at 07:52:53AM +0200, Peter Schneider wrote:
Hi Greg,
Am 22.10.2025 um 07:28 schrieb Greg Kroah-Hartman:
On Wed, Oct 22, 2025 at 06:49:21AM +0200, Thorsten Leemhuis wrote:
On 10/21/25 21:50, Greg Kroah-Hartman wrote:
6.17-stable review patch. If anyone has any objections, please let me know.
From: Thomas Zimmermann tzimmermann@suse.de
commit 6f719373b943a955fee6fc2012aed207b65e2854 upstream.
Blank the display by disabling sync pulses with VGACR17<7>. Unblank by reenabling them. This VGA setting should be supported by all Aspeed hardware.
TWIMC, a regression report about 6.18-rc2 that was bisected to this commit just came in:
https://lore.kernel.org/all/a40caf8e-58ad-4f9c-af7f-54f6f69c29bb@googlemail....
To quote:
""" I have encountered a serious (for me) regression with 6.18-rc2 on my 2-socket Ivy Bridge Xeon E5-2697 v2 server. After booting, my console screen goes blank and stays blank. 6.18-rc1 was still fine.
[...]
When I revert this from 6.18-rc2, the issue goes away and my console screen works again. """
Thanks, I'll go drop this patch from the stable queues for now.
greg k-h
So Thorsten (thanks!) was 20 minutes quicker ;-) But I just tested this with 6.12.55-rc1 and 6.17.5-rc1, too, and can confirm that this offending patch breaks VGA on my machine, and that reverting just this patch against either RC makes the issue go away.
I'll retest -rc2 too when it's out.
Should be out now, thanks!