https://bugs.freedesktop.org/show_bug.cgi?id=73067
Priority: medium Bug ID: 73067 Assignee: dri-devel@lists.freedesktop.org Summary: RV770 - screen flicker with radeon.dpm=1 Severity: normal Classification: Unclassified OS: Linux (All) Reporter: vasquinhos13@sapo.pt Hardware: x86-64 (AMD64) Status: NEW Version: unspecified Component: DRM/Radeon Product: DRI
Created attachment 91222 --> https://bugs.freedesktop.org/attachment.cgi?id=91222&action=edit lspci -vv
linux-sabayon-3.12.5 https://github.com/Sabayon/kernel I installed the lastest available kernel version on sabayon-weekly repository. sha1sum /lib/firmware/radeon/RV770_smc.bin 43e2fc7b9faa57e78401e1b1c609f71374cc8109 /lib/firmware/radeon/RV770_smc.bin
Whem booted with radeon.dpm=1 as a kernel parameter on grub, screen flicks: jumps down some pixels and go to normal position every ~4 seconds very fast. Whem /sys/class/drm/card0/device/power_dpm_force_performance_level is changed to "high" or "low" flicker stops. Whem is changed back to "auto" flicker happens again, no mather what value is power_dpm_state.
Whem booted without radeon.dpm=1 parameter there isn't flicker.