Source: firmware-nonfree Version: 20240709-2 Severity: important First, some context: I have a Dell laptop with 2 external monitors connected via a dock. With 6.8+ Linux kernels, one of the external monitors randomly blanks for 2-3 seconds (no such issue with earlier kernels); not always the same monitor, but in most cases, not both at the same time. I had reported the following bugs about this issue:
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1072063 https://gitlab.freedesktop.org/drm/i915/kernel/-/issues/11821 This blanking issue can occur several times per day. After the upgrade of the binary packages of firmware-nonfree source to 20240709-2, a new issue appeared: *both* external monitors randomly blank for 2-3 seconds. Worse: * With a (non-Debian) 6.11.0-rc2+ test kernel (which I used in the context of the other bug), this issue occurs very often: up to several times per minute! * With the linux-image-6.7.12-amd64 Debian kernel, this issue also occurs (but not often), while this kernel does not have the bug mentioned above. Downgrading to 20240709-1 made the issue disappear, at least with the linux-image-6.7.12-amd64 Debian kernel (I have not tried the 6.11.0-rc2+ test kernel yet, but note that I was already using it with 20240709-1 before September 2). -- System Information: Debian Release: trixie/sid APT prefers unstable-debug APT policy: (500, 'unstable-debug'), (500, 'stable-updates'), (500, 'stable-security'), (500, 'stable-debug'), (500, 'proposed-updates-debug'), (500, 'unstable'), (500, 'testing'), (500, 'stable'), (1, 'experimental') Architecture: amd64 (x86_64) Kernel: Linux 6.7.12-amd64 (SMP w/16 CPU threads; PREEMPT) Kernel taint flags: TAINT_WARN Locale: LANG=C.UTF-8, LC_CTYPE=C.UTF-8 (charmap=UTF-8), LANGUAGE not set Shell: /bin/sh linked to /usr/bin/dash Init: systemd (via /run/systemd/system) LSM: AppArmor: enabled -- Vincent Lefèvre <[email protected]> - Web: <https://www.vinc17.net/> 100% accessible validated (X)HTML - Blog: <https://www.vinc17.net/blog/> Work: CR INRIA - computer arithmetic / AriC project (LIP, ENS-Lyon)
