Wonderfull! Thxs a lot Michel! Your way working well. Here what I'm done (if anyone need it): I removed xorg.conf (I think that your solution working with it anyway)
I'm login on kde with user login and open a terminal (konsole) and I list my 2 graphics cards: xrandr --listproviders Providers: number : 2 Provider 0: id: 0x99 cap: 0xf, Source Output, Sink Output, Source Offload, Sink Offload crtcs: 2 outputs: 3 associated providers: 1 name:ATI Radeon X1550 64-bit @ pci:0000:02:00.0 Provider 1: id: 0x53 cap: 0xf, Source Output, Sink Output, Source Offload, Sink Offload crtcs: 2 outputs: 2 associated providers: 1 name:ATI Radeon 3000 Graphics @ pci:0000:01:05.0 and I launch: /usr/bin/xrandr --setprovideroutputsource "ATI Radeon 3000 Graphics @ pci:0000:01:05.0" "ATI Radeon X1550 64-bit @ pci:0000:02:00.0" At this point, I can see my 3 monitors in KDE system setting (before kde could see only one graphics cards with 2 monitors): - VGA-1 (on ATI Radeon X1550) - DVI-0 (on same graphic card ATI Radeon X1550) - and VGA-1-0 (disabled disabled and kde didn't manage to enabled it) on ATI Radeon 3000 Then I use xrandr to setting/enable them: /usr/bin/xrandr --output DVI-0 --mode 1680x1050 --primary --output VGA-1 --mode 1024x768 --left-of DVI-0 --output VGA-1-0 --mode 1280x1024 --right-of DVI-0 After kde start I need to launch both commands, then I put them in a nice script that I launch in autostart kde (in ~/.xsession it didn't work, maybe because I use sddm and not kdm anymore?): ls ~/.config/autostart-scripts/ lrwxrwxrwx 1 pascal pascal 38 juil. 3 10:27 My3Screens.bash -> /home/pascal/config/My3Screens.bash ty I can go back to work now :-) Pascal -------------------------------------------- En date de : Lun 3.7.17, Michel Dänzer <mic...@daenzer.net> a écrit : Objet: Re: Multi screen and graphics cards failed with radeon driver on debian stretch À: pbasnews-...@yahoo.fr Cc: xorg-driver-ati@lists.x.org Date: Lundi 3 juillet 2017, 5h19 On 30/06/17 10:53 PM, pbasnews-...@yahoo.fr wrote: > Without xorg.conf, I have only one half of screen. I can enable 2 screens of same > graphics card with xrandr of course (and kde system setting too) > > But unfortunaly I can not use xrand to enable my 3rd screen connected on my second > graphic cars > DISPLAY=:1 /usr/bin/xrandr --output VGA-0 --mode 1280x1024 > and > DISPLAY=:1 xrandr --setprovideroutputsource "ATI Radeon 3000 Graphics @ pci:0000:01:05.0" > > return is: "Can't open display :1" [...] > What do you mean by "Oops, the DISPLAY=:1 wasn't supposed to be there." ? It means you should run just xrandr --setprovideroutputsource "ATI Radeon 3000 Graphics @ pci:0000:01:05.0" "ATI Radeon X1550 64-bit @ pci:0000:02:00.0" -- Earthling Michel Dänzer | http://www.amd.com Libre software enthusiast | Mesa and X developer _______________________________________________ xorg-driver-ati mailing list xorg-driver-ati@lists.x.org https://lists.x.org/mailman/listinfo/xorg-driver-ati
