I'm also experiencing this bug. OS: Linux Mint 21.3 Xfce. I have an external monitor whose native resolution is 5120×1440 px. I earlier used it in a reduced resolution of 3840×1080 px, before figuring out how to get the native resolution. The command xrandr still lists the 3840×1080 mode I added earlier. I'd like to get rid of it, because (1) I don't need it anymore, and (2) for some reason, when I start up my computer, the external monitor's resolution defaults to it, and I'm thinking getting rid of the resolution might resolve the problem.
Anyway, here are the outputs of some Bash commands I gave. "..." means elided rows. # xrandr -v xrandr program version 1.5.1 Server reports RandR version 1.6 # xrandr Screen 0: minimum 320 x 200, current 5120 x 1440, maximum 16384 x 16384 eDP-1 connected (normal left inverted right x axis y axis) 1920x1080 60.02 + 48.00 ... DP-1 disconnected (normal left inverted right x axis y axis) HDMI-1 connected primary 5120x1440+0+0 (normal left inverted right x axis y axis) 1190mm x 340mm 3840x1080 59.97 + 2560x1440 59.95 ... 640x480 75.00 72.81 66.67 60.00 59.94 720x400 70.08 5120x1440_30.00 29.96* DP-2 disconnected (normal left inverted right x axis y axis) # sudo xrandr --delmode HDMI-1 3840x1080 X Error of failed request: BadAccess (attempt to access private resource denied) Major opcode of failed request: 140 (RANDR) Minor opcode of failed request: 19 (RRDeleteOutputMode) Serial number of failed request: 32 Current serial number in output stream: 33 I have made no changes to file /etc/X11/xorg.conf; in fact, that file doesn't exist on my computer, but there is an empty directory /etc/X11/xorg.con.d. I'm attaching the output of the command "lspci -vvnn", and the contents of files "/var/log/Xorg.0.log" and "/var/log/Xorg.0.log.old". -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to x11-xserver-utils in Ubuntu. https://bugs.launchpad.net/bugs/364091 Title: xrandr error with delmode To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/x11-xserver-utils/+bug/364091/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
