Bug#860365: mutter: Graphical glitches on Intel GMA X4500 with SNA and Wayland
Apparently, this is not solved due to switching to UXA, but because UXA also reverts to DRI2. SNA does work without issues, as long as it's combined with DRI2 and the xserver-xorg-video-intel driver. So this configuration works as well, and is probably preferable: /etc/X11/xorg.conf.d/20-intel.conf: Section "Device" Identifier "Intel Graphics" Driver "intel" Option "DRI" "2" EndSection However, removing the xserver-xorg-video-intel package and using the X modesetting driver will trigger this bug again, even when you force DRI2 with LIBGL_DISABLE_DRI3=1. The same goes for Wayland. -- With kind regards, Kevin Keijzer GNU/Linux systems administrator, LibrePractice https://www.librepractice.org/
Bug#860365: mutter: Graphical glitches on Intel GMA X4500 with SNA and Wayland
I can confirm the issue of graphical glitches, being on a fully up to date version of Stretch with Linux 4.9, Gnome 3.22, Mesa 13.0.6. I'm testing this on a Thinkpad T400. Kind regards, Nico Rikken
Bug#860365: mutter: Graphical glitches on Intel GMA X4500 with SNA and Wayland
Other things I've tested that didn't help: Updated the following packages to the versions in experimental: - libegl1-mesa 17.0.3-1 - libgbm1 17.0.3-1 - libgl1-mesa-dri 17.0.3-1 - libgl1-mesa-glx 17.0.3-1 - libglapi-mesa 17.0.3-1 - libgles2-mesa 17.0.3-1 - libwayland-egl1-mesa 17.0.3-1 -- reverted back to stretch -- Updated the following packages to the versions in sid: - gir1.2-mutter-3.0 3.22.4-1 - libmutter0i 3.22.4-1 - mutter 3.22.4-1 - mutter-common 3.22.4-1 -- reverted back to stretch -- Meanwhile, the system running stretch with UXA has not shown this issue for over three days now. (Normally it happens every couple of minutes.) /etc/X11/xorg.conf.d/20-intel.conf: Section "Device" Identifier "Intel Graphics" Driver "intel" Option "AccelMethod" "uxa" EndSection I am uncertain if this happens on newer Intel GPU's as well, because I don't have any. I may have some i945 boards with a GMA 950 that I could test later. What I have tested, is a GeForce GT220 with the nouveau driver on a G41 board. I could not reproduce this bug there. -- With kind regards, Kevin Keijzer GNU/Linux systems administrator, LibrePractice https://www.librepractice.org/
Bug#860365: mutter: Graphical glitches on Intel GMA X4500 with SNA and Wayland
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 libmutter0i3.22.3-2 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
