https://bugzilla.kernel.org/show_bug.cgi?id=176301
Bug ID: 176301 Summary: Fiji DisplayPort drm_crtc_helper_set_config *ERROR* failed to set mode on Product: Drivers Version: 2.5 Kernel Version: 4.7.5-200.fc24.x86_64 Hardware: All OS: Linux Tree: Fedora Status: NEW Severity: normal Priority: P1 Component: Video(DRI - non Intel) Assignee: drivers_video-dri@kernel-bugs.osdl.org Reporter: vedran@miletic.net Regression: No
I have a Fiji card
01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Fiji [Radeon R9 FURY / NANO Series] (rev ca)
with two LG DisplayPort 27" 4K monitors. If one of the displays is powered off, but connected, dmesg shows error messages
[drm:drm_crtc_helper_set_config [drm_kms_helper]] *ERROR* failed to set mode on [CRTC:34:crtc-1]
and GDM/X will refuse to run.