--- Begin Message ---
- To: Debian Bug Tracking System <submit@bugs.debian.org>
- Subject: general: System does not boot with second monitor attached
- From: Asbjørn Sæbø <gaffe_1@live.com>
- Date: Sat, 09 Oct 2021 21:18:06 +0200
- Message-id: <163380708654.3033.5227087274962005676.reportbug@tolkien.hildring>
Package: general
Severity: important
X-Debbugs-Cc: gaffe_1@live.com
Dear Maintainer,
I installed Debian 11 on a new computer (with a single monitor during installation, connected with HDMI).
Installation went well, but the monitor came up with a very limited resolution (1024x768, I think).
After a bit of googling, I found that the drivers for the Intel graphics on this board (Rocket Lake, UHD 750) were not
included in the 5.10 kernel that came with Debian Bullseye. I installed kernel 5.14 from Debian Testing, and that seemed to
solve the issue - I got full resolution (still with a single monitor attached).
Taking the system into use as my main system, I set it up with two monitors, one connected with an HDMI cable, one with a
DVI cable. (Both monitors are Benq 24 inch 1920x1080.)
Booting the system, it hangs during boot, with a message "VMC (outside TXT) disabled by bios".
Booting the system with only the HDMI-connected monitor attached works as expected, the system completes the boot sequence,
I can log in and use the system.
Attaching the second monitor after boot also works, both monitors are recognized and works.
As a workaround, I tried enabling "Intel virtualization technology" in the BIOS. Booting with both monitors attached, there
is no longer any error message, but the system still hangs during boot (with a blank screen).
I would expect the system to boot also with two monitors attached.
--- End Message ---
--- Begin Message ---
- To: 996000-done@bugs.debian.org
- Subject: Re: Bug#996000: general: System does not boot with second monitor attached
- From: Chris Hofstaedtler <zeha@debian.org>
- Date: Sun, 27 Jul 2025 16:43:39 +0200
- Message-id: <aIY7GxIb7pvChBCI@per.namespace.at>
- In-reply-to: <0eda8f79-cd78-bc03-c3f6-9f09d0ce1ac8@debian.org>
- References: <163380708654.3033.5227087274962005676.reportbug@tolkien.hildring> <0eda8f79-cd78-bc03-c3f6-9f09d0ce1ac8@debian.org>
On Sat, Oct 09, 2021 at 09:56:16PM +0100, Andy Simpkins wrote:
[..]
> Very best wishes, and good luck with trying new kernels when they arrive
Closing for lack of feedback.
Chris
--- End Message ---