On Sat, Feb 28, 2015 at 4:57 AM, Felix Miata <[email protected]> wrote: > Whether starting X including this: > xrandr --dpi 144 --output DVI-0 --mode 1920x1080 --above VGA-0 --output VGA-0 > --primary --mode 1920x1440 # ati dual > > works or not depends on which Radeon gfxcard used, and how new the software. > > The cards' info: > http://fm.no-ip.com/Tmp/Linux/Xorg/ATIdual/hwinfo-gfx-rv380fan.txt X600 > http://fm.no-ip.com/Tmp/Linux/Xorg/ATIdual/hwinfo-gfx-rv516.txt X1300 > http://fm.no-ip.com/Tmp/Linux/Xorg/ATIdual/hwinfo-gfx-cedarPC-big41.txt > > rv380 works as expected regardless at least as far back as openSUSE 13.1 > k3.12. > openSUSE Tumbleweed 3.19.0: > http://fm.no-ip.com/Tmp/Linux/Xorg/ATIdual/xorg.0.log-under1440xover1080-rv380fan-OK > > cedar works as expected as recently as Mageia 4 k3.12 and openSUSE 13.1 k3.12: > http://fm.no-ip.com/Tmp/Linux/Xorg/ATIdual/xorg.0.log-under1440over1080-os131-cedarOK > http://fm.no-ip.com/Tmp/Linux/Xorg/ATIdual/xorg.0.log-under1440-over1080-mag4-cedarOK > > Failures in the form of black screen on only one output using rv516 and cedar > in the following: > Fedora 20 k3.17.7 cedar (black VGA): > http://fm.no-ip.com/Tmp/Linux/Xorg/ATIdual/xorg.0.log-under1440bad-over1080OK-f20-cedar > openSUSE 13.2 k3.16.7 cedar (black VGA): > http://fm.no-ip.com/Tmp/Linux/Xorg/ATIdual/xorg.0.log-under1440bad-over1080OK-os132-cedar > Fedora 21 cedar (black VGA): > http://fm.no-ip.com/Tmp/Linux/Xorg/ATIdual/xorg.0.log-under1440bad-over1080OK-cedarF21-k3177 > http://fm.no-ip.com/Tmp/Linux/Xorg/ATIdual/xorg.0.log-under1440bad-over1080OK-cedarF21-k3187 > openSUSE Tumbleweed k3.19.0 rv516 (black DVI): > http://fm.no-ip.com/Tmp/Linux/Xorg/ATIdual/xorg.0.log-under1440OKxover1080bad-rv516 > openSUSE Tumbleweed k3.19.0 cedar (black VGA): > http://fm.no-ip.com/Tmp/Linux/Xorg/ATIdual/xorg.0.log-under1440bad-over1080OK-cedar > > All of above pertains to same system, with only changes made being: > > 1-which OS booted > 2-which ATI gfxcard installed > > With necessary xrandr output descriptors for Intel, results are as expected > using onboard Intel gfx instead of ATI PCIe cards. > > On cedar in Tumbleweed at least, dropping analog output mode from 1920x1440 > to 1600x1200 produces expected output. > > Is this a known ATI driver bug? Somebody else's bug? WAD? Hardware flaws? > User error?
Sounds like a kernel regression. Possibly related to the PLL algorithm changes for HDMI audio. See: https://bugzilla.kernel.org/show_bug.cgi?id=91861 I'd suggest opening a new bug. Alex _______________________________________________ xorg-driver-ati mailing list [email protected] http://lists.x.org/mailman/listinfo/xorg-driver-ati
