https://bugzilla.kernel.org/show_bug.cgi?id=65911 Bug ID: 65911 Summary: radeon: garbled output/only noise through HDMI and GPU lockups Product: Drivers Version: 2.5 Kernel Version: 3.12.1 Hardware: All OS: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: Video(DRI - non Intel) Assignee: drivers_video-dri@xxxxxxxxxxxxxxxxxxxx Reporter: tom@xxxxxxxxxxxxxxx Regression: No Created attachment 116301 --> https://bugzilla.kernel.org/attachment.cgi?id=116301&action=edit dmesg 3.12.1 with radeon.audio=1 Hi, I am not able to start X on computer with an ATI Radeon HD 7540D graphics card through HDMI running the linux 3.12.1 kernel. I also tried with 3.10.10 which didn't change anything. I can see my TTY without any problems, though. Starting X however gives me a totally messed up sceen without any structure or information---is is basically color noise. Here and there a black or blue block, but in general it is noise. Looking at the logs, I can see that there are GPU lockups after which X resets it. This happens indenpently of me setting radeon.audio=1 or 0. However, I've attached a dmesg output with radeon.audio=1 and with radeon.audio=0. After a couple of GPU lockups the kernel will eventually panic. This is the top of the callstack: Call Trace: <IRQ> ? __wake_up drm_send_vblank_event [drm] radeon_crtc_handle_flip [radeon] evergreen_irq_process [radeon] I've see issues #60709 and #60687, but the fix posted there is already in my kernel and aparantly doesn't fix my issue. I also tried something suggested in #60687: hdmi regset 0x12c44 0x00000033 With radeon.audio=0, before I try to start X: OLD: 0x12c44 (12c44) 0x00000033 (51) NEW: 0x12c44 (12c44) 0x00000033 (51) With radeon.audio=0, after I have started X: OLD: 0x12c44 (12c44) 0x00000000 (0) NEW: 0x12c44 (12c44) 0x00000033 (51) With radeon.audio=1, before I try to start X: OLD: 0x12c44 (12c44) 0x00000000 (0) NEW: 0x12c44 (12c44) 0x00000033 (51) With radeon.audio=1, after I have started X: OLD: 0x12c44 (12c44) 0x00000033 (51) NEW: 0x12c44 (12c44) 0x00000033 (51) All this, however, didn't change anything. If readeon.audio=1 is set, I can play audio over HDMI until there a GPU lockup and again after the GPU reset. I've also tried radeon options dpm and no_wb without any success. It also didn't help to add 'Option "AccelMethod" "EXA"' to the radeon driver/device section in /etc/X11/xorg.conf.d/20-radeon.conf. Are there more things I could test or provide? -- You are receiving this mail because: You are watching the assignee of the bug. _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/dri-devel
