Public bug reported:
Binary package hint: xserver-xorg-video-nv
For over four years I've been using a GeForce 7300 LE with a FSC P20
monitor at 1600x1200, connected via DVI. The display modelines were
written to xorg.conf back in the day. After hot-switching to a new
monitor which runs at 1680x1050 or 1600x1024, at first xrandr didn't
check the new device and still showed 1600x1200 as its active
resolution, and the monitor output appeared a bit fuzzy albeit usable.
After a restart of the X server, nothing changed. After a reboot, the
resolution was downgraded to 1280x1024 due to the old modelines. Only
taking them out and restarting X solved the problem for me.
There are probably up to three individual bugs involved: The fact that xrandr
didn't change its output after swapping monitors, the fact that restarting X
and rebooting showed different effects and the fact that the old xorg modelines
needed to be eliminated manually.
What I would expect is some sort of tool which helps with hot-plugging
monitors. Or even removing modelines on upgrades when it can be recognised that
they were auto-generated and don't serve a purpose anymore.
The (now closed) bug report #83934 showed a similar effect and might
serve as further use case although it is probably too old to verify.
** Affects: xserver-xorg-video-nv (Ubuntu)
Importance: Undecided
Status: New
--
Old configuration should be updated or ignored
https://bugs.launchpad.net/bugs/655635
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