Created attachment 101759 [details] dmesg with drm.debug=1 With 3.16-rc2 my tripple screen setup breaks. DisplayPort-0 connected 1920x1200 <- ok HDMI-0 connected 1920x1080 <- (tv) resolution out of range DVI-0 connected 1680x1050 <- ok All screens work during bootup before X starts. ddx driver 7.3.0.
Created attachment 101760 [details] Xorg log
Can you attach the dmesg with drm.debug=1 before you start X? All the important information is cut off. E.g., boot into single user mode (append 1 to the kernel command line in grub).
Created attachment 101762 [details] proper kernel-log
Created attachment 101763 [details] [review] limit bpc to 10 Does this patch help?
Not really. Now i get a "no signal" error from my TV.
Created attachment 101773 [details] [review] testing patch Does this patch help?
No, still no signal
Created attachment 101866 [details] [review] testing patch Does this help? Can you also attach a copy of your vbios? To get a copy of your vbios: (as root) (use lspci to get the bus id) cd /sys/bus/pci/devices/<pci bus id> echo 1 > rom cat rom > /tmp/vbios.rom echo 0 > rom
Created attachment 101887 [details] vbios.rom
I applied the latest patch on a vanilla source-tree and i still get no signal.
(In reply to comment #10) > I applied the latest patch on a vanilla source-tree and i still get no > signal. Correction - I get a "resolution out of range" with the latest patch
Created attachment 102075 [details] [review] add deep color module option This patch disables the deep color support by default which should resolve your issue. You can set radeon.deep_color=1 on the kernel command line in grub to re-enable it. Hopefully we can resolve this properly for 3.17 and enable deep color by default.
(In reply to comment #12) > Created attachment 102075 [details] [review] [review] > add deep color module option > > This patch disables the deep color support by default which should resolve > your issue. You can set radeon.deep_color=1 on the kernel command line in > grub to re-enable it. Hopefully we can resolve this properly for 3.17 and > enable deep color by default. Indeed it does. I've tested with 3.16-rc4 and all is well again. Sorry for the delayed reply. If I can be useful in further testing please let me know. Thanks.
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