Bug ID 1218732
Summary Lenovo T14 external monitor aliasing at monitor resolution
Classification openSUSE
Product openSUSE Tumbleweed
Version Current
Hardware Other
OS Other
Status NEW
Severity Normal
Priority P5 - None
Component Kernel:Drivers
Assignee kernel-bugs@suse.de
Reporter mattm3a@yahoo.com
QA Contact qa-bugs@suse.de
Target Milestone ---
Found By ---
Blocker ---

Created attachment 871784 [details]
Photo of display issues at 1920x1080 resolution

I have a Lenovo Thinkpad T14 and am having trouble displaying properly on a
Samsung SyncMaster P2770HD monitor. 

lspci | grep -i vga
00:02.0 VGA compatible controller: Intel Corporation Alder Lake-UP3 GT2 [Iris
Xe Graphics] (rev 0c)

The native resolution of the T14 built-in monitor is 1920x1200 (16:10 aspect
ratio). 

The P2770HD is native 1920x1080 (16:9 aspect ratio). 

I am displaying only on one monitor due to
https://bugzilla.opensuse.org/show_bug.cgi?id=1211975

The P2770HD displays fine with 1680x1050 resolution (16:10). When I set the
P2770HD to its native 1920x1080 resolution, it looks like I am displaying a
1920x1080 window scaled from a 1920x1200 screen; the bottom of the screen is
cutoff and there is aliasing. See attachment. 

I cannot screen capture this behavior with the KDE Spectacle program. When I
screen capture, the result looks normal, not what is actually displayed on
screen.


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