Package: mutter Version: 3.22.3-2 Severity: important I have a couple of GM45 ThinkPads and G41 desktops running Debian stretch with the GNOME 3.22 desktop.
Quite regularly, the screen glitches / distorts, followed by this line in dmesg: [drm:i965_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun The easiest way to reproduce this, is by typing text into a GTK application, such as GNOME Terminal or gedit while running GNOME Shell. This usually triggers the bug within a minute or two. In some severe cases, the display would become completely white or grey and GNOME Shell locks up completely. Things I've tested that do not make a difference: - xserver-xorg-video-intel vs built-in modesetting DDX; - X vs Wayland session; - Vendor BIOS vs coreboot with different payloads; - Setting LIBGL_DISABLE_DRI3=1 in /etc/environment. Things I've tested that do seem to make a difference: - Using UXA acceleration instead of SNA acceleration. This, however, can not solve the problem for Wayland of course. But since I've changed to UXA I haven't seen a single glitch or underrun for over 24 hours now. I have tried booting with various drm.debug kernel options, but nothing interesting is ever shown. Just the FIFO underrun with no additional logging. There's also nothing in journalctl when a glitch happens. -- System Information: Debian Release: 9.0 APT prefers testing APT policy: (500, 'testing') Architecture: amd64 (x86_64) Kernel: Linux 4.9.0-2-amd64 (SMP w/2 CPU cores) Locale: LANG=nl_NL.UTF-8, LC_CTYPE=nl_NL.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Init: systemd (via /run/systemd/system) Versions of packages mutter depends on: ii gsettings-desktop-schemas 3.22.0-1 ii libc6 2.24-9 ii libglib2.0-0 2.50.3-2 ii libmutter0i 3.22.3-2 ii libx11-6 2:1.6.4-3 ii libxcomposite1 1:0.4.4-2 ii mutter-common 3.22.3-2 ii zenity 3.22.0-1+b1 Versions of packages mutter recommends: ii gnome-session [x-session-manager] 3.22.3-1 Versions of packages mutter suggests: ii gnome-control-center 1:3.22.2-1 ii xdg-user-dirs 0.15-2+b1 -- no debconf information
