Comment # 26
on bug 111122
from Matt D.
Created attachment 145172 [details] amd_fix.sh I've been having a problem with display corruption on Fedora using recent updates. Here is my report on their bug tracker: https://bugzilla.redhat.com/show_bug.cgi?id=1745380 I can confirm that when compiz is enabled, the system will lock up when it's started. Adding "iommu=pt" to the kernel flags in grub2 will allow the system to boot without freezing but the display is still corrupt. Adding "AMD_DEBUG=nodcc" to the environment provides a complete workaround (without the need for the kernel flag). I've attached a file "amd_fix.sh" which if placed in /etc/profile.d/ will provide a workaround until this can be fixed in the kernel or wherever the problem is.
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