https://bugs.freedesktop.org/show_bug.cgi?id=107731
Bug ID: 107731 Summary: radeon (amdgpu) DisplayPort loss of max-resolution on DP monitor (after monitor power saving / idle) Product: DRI Version: XOrg git Hardware: x86-64 (AMD64) OS: Linux (All) Status: NEW Severity: normal Priority: medium Component: DRM/AMDgpu Assignee: dri-devel@lists.freedesktop.org Reporter: freedesktop-bugs@fermulator.fastmail.org
Created attachment 141328 --> https://bugs.freedesktop.org/attachment.cgi?id=141328&action=edit dmesg output post DP disconnect + reconnect to fix resolution
as an extension of the story from: * https://bugs.freedesktop.org/show_bug.cgi?id=107560#c9
after a few kernel/driver upgrades and weeks later, that is no longer reproducible - and is instead replaced by lesser issues still plaguing the monitor connected via display port
$ uname -r 4.17.17-100.fc27.x86_64
noticed that the same monitor (connected via DisplayPort) had mis-match capabilities (wasn't able to go max resolution)
``` $ xrandr Screen 0: minimum 320 x 200, current 3840 x 1200, maximum 16384 x 16384 DisplayPort-0 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 0mm x 0mm 1920x1080 59.95* 1600x1200 59.95 1680x1050 59.95 1280x1024 59.95 1440x900 59.95 1280x800 59.95 1280x720 59.95 1024x768 59.95 800x600 59.95 640x480 59.95 HDMI-A-0 disconnected (normal left inverted right x axis y axis) DVI-D-0 connected 1920x1200+1920+0 (normal left inverted right x axis y axis) 518mm x 324mm 1920x1200 59.95*+ 1920x1080 59.95 1600x1200 60.00 1680x1050 59.95 1280x1024 60.02 1440x900 59.95 1280x960 60.00 1280x800 59.95 1280x720 59.95 1024x768 60.00 800x600 60.32 56.25 640x480 59.94 ```
The " 1920x1200 59.95*+" option is missing from the display port monitor.
If I disconnect the DP, and reconnect, it comes back.
``` $ xrandr | grep + DisplayPort-0 connected primary 1920x1200+0+0 (normal left inverted right x axis y axis) 518mm x 324mm 1920x1200 59.95*+ DVI-D-0 connected 1920x1200+1920+0 (normal left inverted right x axis y axis) 518mm x 324mm 1920x1200 59.95*+ ```
--- $ dnf info xorg-x11-drv-amdgpu Failed to synchronize cache for repo 'mosquito-atom', disabling. Failed to synchronize cache for repo 'region51-chrome-gnome-shell', disabling. Failed to synchronize cache for repo 'spacewalk-client', disabling. Last metadata expiration check: 20 days, 23:02:26 ago on Tue 07 Aug 2018 11:04:16 AM EDT. Installed Packages Name : xorg-x11-drv-amdgpu Version : 18.0.1 Release : 1.fc27 Arch : x86_64 Size : 147 k Source : xorg-x11-drv-amdgpu-18.0.1-1.fc27.src.rpm Repo : @System
From repo : updates
Summary : AMD GPU video driver URL : https://www.x.org/wiki License : MIT Description : X.Org X11 AMDGPU driver
$ rpm -qa | egrep "amdgpu|gdm|dri-|xorg-x11-server|gnome-session" mesa-dri-drivers-17.3.9-1.fc27.x86_64 xorg-x11-server-utils-7.7-23.fc27.x86_64 xorg-x11-drv-amdgpu-18.0.1-1.fc27.x86_64 gnome-session-3.26.1-1.fc27.x86_64 gdm-3.26.2.1-3.fc27.x86_64 gnome-session-xsession-3.26.1-1.fc27.x86_64 xorg-x11-server-Xephyr-1.19.6-7.fc27.x86_64 gnome-session-wayland-session-3.26.1-1.fc27.x86_64 pulseaudio-gdm-hooks-12.2-1.fc27.x86_64 xorg-x11-server-Xorg-1.19.6-7.fc27.x86_64 xorg-x11-server-common-1.19.6-7.fc27.x86_64 xorg-x11-server-Xwayland-1.19.6-7.fc27.x86_64