could it be possible that I'd try to communicate with LCD display thru ddc using i2c-dev module to probe how to access it? maybe this would help?
2012/7/19 Alex Deucher <alexdeuc...@gmail.com>: > On Thu, Jul 19, 2012 at 7:25 AM, Przemysław Tomczyk > <tomczyk.prze...@gmail.com> wrote: >> Hi and hello to the list, >> >> Recently I've received workstation with Xpress 200 card, no DVI >> output. Kernel is 3.4.4. >> DVI output goes blank as soon as KMS kicks in. >> Xorg.log mentions no EDID for DVI-0, but forcing edid from file using >> drm_kms_helper module didn't help. >> Now i'm getting "DVI: Failed to assign ddc bus! Check dmesg for i2c >> errors.", bot no i2c errors in dmesg output. >> >> in /sys i c an see nodes for 2 buses: >> #cat /sys/devices/pci0000\:00/0000\:00\:01.0/0000\:01\:05.0/i2c-2/name >> Radeon i2c bit bus VGA_DDC >> # cat /sys/devices/pci0000\:00/0000\:00\:01.0/0000\:01\:05.0/i2c-1/name >> Radeon i2c bit bus DVI_DDC >> >> >> I have bios dump ready to attach on request. > > Please open a bug: > https://bugs.freedesktop.org/ > Product: DRI, component: DRM/Radeon > and attach your xorg log, dmesg output, and 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 > > Thanks! > > Alex _______________________________________________ xorg-driver-ati mailing list xorg-driver-ati@lists.x.org http://lists.x.org/mailman/listinfo/xorg-driver-ati