Quoting Chris Fisichella <ch...@communityrenewables.com>:
Hi, Does anyone have any experience with removing the X cursor from a second monitor to make it workable? Thanks, Chris I have been trying to add a second monitor to my machine. I can' quite get it. I am running Debian 7.6.0 and can get the desktop to show either: 1. On the original monitor (HP 2025, Nouveau driver), second monitor does not load X 2. On the second monitor (Haier 760, mga driver), first monitor is black with just an underscore cursor showing 3. The first monitor showing a usable window manager. I am typing in that window manager right now. Off to the right is the second monitor. I can move my cursor onto it and it turns to an X. I can't drag any windows onto that display. I arrived at this configuration by using the xorg.conf file that was generated by running #Xorg - configure In the Xorg.0.log file, I see: [ 18.165] (EE) [drm] drmOpen failed. [ 18.165] (EE) MGA(1): [drm] DRIScreenInit failed. Disabling DRI. . . . [ 18.166] (WW) MGA(1): Direct rendering disabled [ 18.166] (--) RandR disabled The entire Xorg.0.log file is below Indeed, when I run #xrandr I don't see the second display.
I swapped out the Matrox card and installed an ATI card. It's interesting because I had the same failure mode. Can I have two cards on separate PCI busses? I noticed for both cards it first does this: [ 16.987] (--) PCI: (0:0:13:0) 10de:03d1:105b:0d15 rev 162, Mem @ 0xfb000000/16777216, 0xe0000000/268435456, 0xfa000000/16777216, BIOS @ 0x????????/131072 [ 16.987] (--) PCI:*(0:1:7:0) 102b:0520:102b:ff03 rev 1, Mem @ 0xf9000000/16777216, 0xfd7fc000/16384, 0xfc800000/8388608, BIOS @ 0x????????/65536 It finds both cards. One card is on bus 0 at location 13 (0xD) and the other is on bus 1 at location 7. For the card on bus 0, It finds and successfully calls [ 17.295] drmOpenDevice: node name is /dev/dri/card0 [ 17.295] drmOpenDevice: open result is 9, (OK) [ 17.295] drmOpenByBusid: Searching for BusID pci:0000:00:0d.0 [ 17.295] drmOpenDevice: node name is /dev/dri/card0 [ 17.295] drmOpenDevice: open result is 9, (OK) [ 17.295] drmOpenByBusid: drmOpenMinor returns 9 [ 17.295] drmOpenByBusid: drmGetBusid reports pci:0000:00:0d.0 [ 17.295] (II) [drm] DRM interface version 1.4 [ 17.295] (II) [drm] DRM open master succeeded. The call to drmOpenByBusid returns 0:0:0d.0. I believe that is the onboard video When it comes time to use the video card in the PCI slot, something different happens: [ 18.043] drmOpenDevice: node name is /dev/dri/card0 [ 18.044] drmOpenDevice: open result is 11, (OK) [ 18.044] drmOpenDevice: node name is /dev/dri/card0 [ 18.044] drmOpenDevice: open result is 11, (OK) [ 18.044] drmOpenByBusid: Searching for BusID pci:0000:01:07.0 [ 18.044] drmOpenDevice: node name is /dev/dri/card0 [ 18.044] drmOpenDevice: open result is 11, (OK) [ 18.044] drmOpenByBusid: drmOpenMinor returns 11 [ 18.044] drmOpenByBusid: Interface 1.4 failed, trying 1.1 [ 18.044] drmOpenByBusid: drmGetBusid reports pci:0000:00:0d.0 [ 18.044] drmOpenDevice: node name is /dev/dri/card1 I see the call to drmOpenByBusid, and it seems to be trying to find the card on 1:07:0. I don't know why it is still using /dev/dri/card0. The second call to drmGetByBusid then goes back to 0:d:0. /dev/dri/card1 should be the card that is on the PCI conector. Anyway, as you can see from the last email everything fails from there: [ 18.165] (EE) [drm] drmOpen failed. [ 18.165] (EE) MGA(1): [drm] DRIScreenInit failed. Disabling DRI. The same thing happened to the ATI card. Any pointers on how to troubleshoot this? Is it a software bug? User inexperience? I tried following the many posted "dual head" how-to's but they just say to use xrandr. I can't get that far with my setup. Thanks, Chris
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