https://bugzilla.kernel.org/show_bug.cgi?id=31972
Summary: 2.6.38.1: radeon hd 6870: kms, hdmi, signal is correct only for 1-2 seconds Product: Drivers Version: 2.5 Platform: All OS/Version: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: Video(DRI - non Intel) AssignedTo: drivers_video-dri@kernel-bugs.osdl.org ReportedBy: arekm@maven.pl Regression: No
Created an attachment (id=52182) --> (https://bugzilla.kernel.org/attachment.cgi?id=52182) dmesg with messages
I'm using 2.6.38.1 with radeon hd 6870 (http://www.gigabyte.com/products/product-page.aspx?pid=3615#ov) connected only to toshiba regza tv with HDMI connector. Nothing else is connected.
After modprobe radeon KMS kicks in, resolution is changed and everything looks fine for 1-2 seconds. Then signal is lost according to tv and there are tons of: "[drm:atom_dp_get_link_status] *ERROR* displayport link status failed", some kworker eats 90% of cpu and fans go up.
dmesg attached.