Created attachment 71854 [details]
screenshot with cairo 1.12.4 and later
When using the cirrus graphics driver while running Ubuntu in a kvm virtual machine, cairo 1.12.4 and later (including 1.12.8) corrupts pixmaps. Downgrading to 1.12.2 seems to solve this issue. See attached screenshots.
Created attachment 71855 [details]
screenshot with cairo 1.12.2
Downstream bug report:
The change is the use of ShmPixmaps/ShmImage.
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