Scaling of apps/font sizes does not work on high-res displays, multi-display setup when using tiling

[TS-CUBED]

How did you upgrade to 21.10? (Fresh install / Upgrade)

Upgrade from 20.10

Related Application and/or Package Version (run apt policy $PACKAGE NAME):

na

Issue/Bug Description:

I run a dual display setup:

1920x1080 (17" internal laptop display)
3840x2160 (32" Viewsonic, set as main screen)

After upgrade to 21.10, firefox and other apps scale badly on first launch: Screenshot

Steps to reproduce (if you know):

• Lauch Pop-Os

• Log in

• Start Firefox

• firefox starts up and has weird scaling

• Problem only occurs when tiling (pop-shell) is active

• Scaling resets to correct scaling when switching to max. size (Super-M) and stays at correct scaling when switching back to tiled mode (Super-M a second time).

EDIT: this also occurs with some other apps and sporadically. Always fixed by scaling to fullscreen and back (Super-M twice).

Expected behavior:

firefox starts up with correct scaling

Other Notes:

I run the nouveau driver on Nvidia Quadro K4100M

xrandr output has the correct resolutions and display sizes:

``
DP-3 connected primary 3840x2160+1920+0 (normal left inverted right x axis y axis) 698mm x 393mm
3840x2160 60.00*+ 59.97 25.00 24.00 23.98 29.98
....

eDP-1 connected 1920x1080+0+0 (normal left inverted right x axis y axis) 382mm x 215mm
1920x1080 60.04*+ 60.01 59.97 59.96 59.93 40.03
....
``

EDIT: This also occurs on a fresh install of 21.10 using the NVIDIA drivers (nvidia-driver-418-server). So it seems to be unrelated to the driver.

[x2ws]

This happened to me on my Dell XPS 15 9500 running the intel iGPU and only the laptop display (1920x1200). I experienced the issue with JetBrains Rider.

I did not experience this issue when running the dGPU (Nvidia) with an external Dell 38" Ultrawide.

Hitting Super + M seems to fix the issue.

EDIT: The app is outside the Active Hint border and the application menu bar is missing until I hit Super + M.

EDIT: Another example. Left was fixed with Super + M, then I opened another instance (right) and font is all distorted. This is same screen of the same app, just a new instance.

[jawadalkassim]

i have the same issue
noticed that with Telegram - Brave - vlc
Single monitor 1920 x 1080
Intel UHD 620 Gpu

[TS-CUBED]

Did a few more tests: * it's independent on graphics driver used (both nouveau and nvidia-driver-418-server on a Quadro K4100M) * it does not happen all the time * no clear app dependency: firefox, nautilus, obs studio * happens on both FHD and 4K displays (dual display on laptop, I have not tested single display, may do that when I get round to it) * xrandr shows correct resolutions and sizes for both displays * it only seems to happen when pop-os tiling mode is enabled Could it be a race condition when apps start up and pop-shell requests screen res and size?

…

________________________________ From: Jawad Alkassim ***@***.***> Sent: 29 October 2021 10:05 To: pop-os/beta ***@***.***> Cc: Torsten Schenkel ***@***.***>; Author ***@***.***> Subject: Re: [pop-os/beta] Scaling of apps/font sizes does not work on high-res displays, multi-display setup when using tiling (Issue #258) CAUTION: This message was sent from outside the University, purportedly from ***@***.*** . Please check the sender is legitimate before responding. Please treat any links or attachments with care - do not follow or open them unless you are sure they are genuine. i have the same issue noticed that with Telegram - Brave - vlc — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub<#258 (comment)>, or unsubscribe<https://github.com/notifications/unsubscribe-auth/AMOMX2AAEJE52PSHXGMXTYLUJJIVFANCNFSM5GUVXPXQ>. Triage notifications on the go with GitHub Mobile for iOS<https://apps.apple.com/app/apple-store/id1477376905?ct=notification-email&mt=8&pt=524675> or Android<https://play.google.com/store/apps/details?id=com.github.android&referrer=utm_campaign%3Dnotification-email%26utm_medium%3Demail%26utm_source%3Dgithub>.

[burnsco]

happens for me when using qbitorrent and elisa so far, also on a 4k monitor + 1080 multi setup.

[n3m0-22]

I think this issues has been fixed, but please let us know if you still have a problem and we can reopen.