Bug#947223: xwayland: Unable to utilize monitor at its full native 2560x1080 resolution
Package: xwayland
Version: 2:1.20.4-1
Severity: important
After a switch by Debian project to a wayland protocol, I am not able to use a full resolution of our monitors.
Monitors are LG-29UM57-P. Their default and native resolution is 2560x1080.
Monitor is connected to PC via DisplayPort interface.
This issue only manifested after migrating from GNU/Debian v8 Jessie to GNU/Debian v 9 Stretch and to GNU/Debian v10 Buster.
Monitor functioned as expected under Debian 8 Jessie at it's full 2560x1080 resolution.
There was no change in hardware what so ever. Once Debian Stretch was installed, it is no longer possible to set a monitor resolution to it's native resolution.
Same issue with Debian 10 Buster.
Please advise what can be done (other than rolling back to Debian Jessie) to switch XServer+Wayland to a proper full resolution.
Please note, exact same hardware PC/Graphical card + displayport cable + Monitor worked as expected with Debian Jessie, therefor this is not a hardware limitation.
Thank you for looking in to this matter.
HW details:
System: Host: t420 Kernel: 4.19.0-6-amd64 x86_64 bits: 64 Desktop: Gnome 3.30.2 Distro: Debian GNU/Linux 10 (buster)
Machine: Type: Laptop System: LENOVO product: 4178C9U v: ThinkPad T420
CPU: Topology: Dual Core model: Intel Core i7-2640M bits: 64 type: MT MCP L2 cache: 4096 KiB
Speed: 798 MHz min/max: 800/3500 MHz Core speeds (MHz): 1: 798 2: 797 3: 797 4: 797
Graphics: Device-1: Intel 2nd Generation Core Processor Family Integrated Graphics driver: i915 v: kernel
Display: wayland server: X.Org 1.20.4 driver: i915 resolution: 1600x900~60Hz, 1920x1080~60Hz
OpenGL: renderer: Mesa DRI Intel Sandybridge Mobile v: 3.3 Mesa 18.3.6
Damien
-- System Information:
Debian Release: 10.2
APT prefers stable-updates
APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: amd64 (x86_64)
Kernel: Linux 4.19.0-6-amd64 (SMP w/4 CPU cores)
Kernel taint flags: TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled
Versions of packages xwayland depends on:
ii libaudit1 1:2.8.4-3
ii libbsd0 0.9.1-2
ii libc6 2.28-10
ii libdrm2 2.4.97-1
ii libegl1 1.1.0-1
ii libepoxy0 1.5.3-0.1
ii libgbm1 18.3.6-2
ii libgcrypt20 1.8.4-5
ii libgl1 1.1.0-1
ii libpixman-1-0 0.36.0-1
ii libselinux1 2.8-1+b1
ii libsystemd0 241-7~deb10u2
ii libunwind8 1.2.1-9
ii libwayland-client0 1.16.0-1
ii libxau6 1:1.0.8-1+b2
ii libxdmcp6 1:1.1.2-3
ii libxfont2 1:2.0.3-1
ii libxshmfence1 1.3-1
ii xserver-common 2:1.20.4-1
xwayland recommends no packages.
xwayland suggests no packages.
-- no debconf information
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