On Fri, Apr 28, 2017 at 9:55 PM, Michel Dänzer <[email protected]> wrote: > On 29/04/17 04:15 AM, Alex Deucher wrote: >> On Fri, Apr 28, 2017 at 5:46 AM, Felix Miata <[email protected]> wrote: >>> Felix Miata composed on 2017-04-28 05:22 (UTC-0400): >>> >>>> Felix Miata composed on 2017-04-27 06:35 (UTC-0400): >>> >>>>> openSUSE Tumbleweed >>>>> kernel 4.10.10 >>>>> server 1.19.3 >>>>> ATI HD5450 PCIe gfxcard (Cedar) >>> ... >>> When I use this startup script: >>> xrandr --output DVI-0 --primary --mode 1920x1200 --left-of HDMI-0 >>> xrandr --output HDMI-0 --mode 1920x1080 >>> xrandr --output VGA-0 --mode 1680x1050 --above DVI-0 >>> xrandr --dpi 108 >>> >>> things improve dramatically. 1920x1080 appears right of 1920x1200, and >>> mouse can >>> reach them both, but 1680x1050 remains asleep. >>> Xrandr and Xorg.0.log combined: >>> http://fm.no-ip.com/Tmp/Linux/Xorg/ATI3/xorg.0.log-tw-fi965-hd5450-atiDrv-viz-e >>> >>> Is this low-budget Sapphire ATI Cedar gfxcard not supposed to be able to >>> produce >>> on all three outputs at once? >> >> All evergreen cards only have 2 PLLs so that means they can only >> support two independent clocks. If you want to use more than two >> displays, you'll need to use displayport or for non-displayport, at >> least two of the displays need to be using the exact same display >> timing. > > BTW, does only the pixel clock need to be identical, or do the > vertical/horizontal blanking periods also need to happen at the same time?
Only the clock. There are enough crtcs for the timing. Alex _______________________________________________ xorg-driver-ati mailing list [email protected] https://lists.x.org/mailman/listinfo/xorg-driver-ati
