Thanks for the bug report.
1. Can you please run this command on the machine and send us the
output?
xrandr --verbose
2. Please also run this command to send more system information:
apport-collect 1792167
** Project changed: kernel => mutter
** Project changed: mutter => mir
** No longer affects: mir
** Project changed: xorg-server => mir
** No longer affects: mir
** No longer affects: gdm (Ubuntu)
** Package changed: gnome-shell (Ubuntu) => mutter (Ubuntu)
** Changed in: mutter (Ubuntu)
Status: New => Incomplete
** Changed in: qtbase-opensource-src (Ubuntu)
Status: New => Incomplete
** Project changed: qt => mir
** No longer affects: mir
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You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to qtbase-opensource-src in
Ubuntu.
https://bugs.launchpad.net/bugs/1792167
Title:
Display size detected incorrectly
Status in mutter package in Ubuntu:
Incomplete
Status in qtbase-opensource-src package in Ubuntu:
Incomplete
Bug description:
Since Ubuntu switched to Gnome, display scaling does not work
correctly. This is because my external monitor is detected as 7"
although it is 32". All applications which use Qt auto scaling have
huge controls!
It seems like many users have the same problem
(https://ubuntuforums.org/showthread.php?t=2390362) and thus disable
Qt auto scaling. I think the solution should be to fix the size
detection instead.
Further, it seems not related to graphics driver, since I personally
use the open source driver with my internal Intel card, whereas
someone else uses a proprietary Nvidia driver
(https://askubuntu.com/q/1066879/206608).
If it is in the wrong category, please move it / add the corresponding
packages.
If you need any further information to tackle the problem, just tell
me!
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/mutter/+bug/1792167/+subscriptions
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