0.85 Linux: Double sized qt UI on Xubuntu

[juozas]

XnView: MP 0.85 - 64 bit
OS: Linux 64bit
Display card: Nvidia Geforce 210, NVidia driver version 340.102,
Monitor: Samsung tv (Model: UE19ES4000W) @ 1366x768, connected using Hdmi

UI of XnviewMP on Xubuntu is double sized, including first run dialog. The DPI handling of qt might be incorrect.

Effect: Too large icons, menus, unable to reach some settings, something might become inaccessible later.

To reproduce:
1. Install/Update Xnview 0.85 (64bit deb package)
2. Run program

Actual behaviour (bug): Icons, Menus, etc are too large, QT_AUTO_SCREEN_SCALE_FACTOR=1 env. variable has no effect, QT_AUTO_SCREEN_SCALE_FACTOR=0.5 works

Expected behaviour: DPI Scalling should be correct, UI should not be oversized, like in previous version

p.s. tried on virtual machine, could not reproduce, as it works ok there. dunno what package(s) needed to be installed/removed to fix it
Update: Tried on latest xubuntu live cd; installed 64 bit deb, still affected. Might be hardware related issue, dunno. Both nouveau and nvidia drivers affected, reinstall of os didn't help. Also added display information.

[xnview]

you have a HiDPI screen?

[juozas]

I don't think so, probably not. The Xfce dpi setting on my xubuntu is 96 DPI, Samsung TV (Model UE19ES4000W) is @ 1366x768 (24bit color), Display Card is Nvidia Geforce 210, Nvidia driver version is 340.102.

[xnview]

and you can't reproduce on a virtual machine with xubuntu?

[juozas]

No I could not on neither of my xubuntu virtual machines (one normal other minimal custom), also I don't know what package might cause this.

[xnview]

ok, i'll disable dpi scaling on linux

[xnview]

This problem is supposed to be fixed in XnView MP 0.86. Please check and confirm the bug fix here.

[juozas]

I confirm that Version 0.86 works ok on my linux installation. Thanks for the fix