Trying to set up Dual Heads in Fedora 11
The problem seems to be that even though I can set up a dual head desktop, one of my monitors drops into powersave mode (so only half of my desktop is visible). If I mirror, still, one monitor decides to go into powersave mode.
When I boot, both monitors turn on, when GRUB comes up, I still have 2 monitors. I have 2 (mirrored) monitors on up until I get to the X logon screen. Then one or the other decides to turn off. It is consistent. Though I cannot figure out which setting in the "Display" app is making the choice (left or right/ 1 or 0 -- 1 being my left, it is the deciding factor) Tech specs: ------------------------ --I am running Fedora 11 # uname -a Linux f11.mydomain.com 2.6.30.8-64.fc11.x86_64 #1 SMP Fri Sep 25 04:43:32 EDT 2009 x86_64 x86_64 x86_64 GNU/Linux ------------------------ --I am running X11 v1.6.3.901 # X -version X.Org X Server 1.6.3.901 (1.6.4 RC 1) Release Date: 2009-8-25 X Protocol Version 11, Revision 0 Build Operating System: Linux 2.6.18-164.el5 x86_64 Current Operating System: Linux rsm.amcity.com 2.6.30.8-64.fc11.x86_64 #1 SMP Fri Sep 25 04:43:32 EDT 2009 x86_64 Kernel command line: ro root=/dev/mapper/vg_rsm-LogVol00 rhgb quiet Build Date: 09 September 2009 11:26:05AM Build ID: xorg-x11-server 1.6.4-0.1.fc11 Before reporting problems, check http://wiki.x.org to make sure that you have the latest version. ------------------------ --I have an ATI Radeon 3470: #lspci ... 01:00.0 VGA compatible controller: ATI Technologies Inc Mobility Radeon HD 3470 (prog-if 00 [VGA controller]) Subsystem: Dell Device 3243 Flags: bus master, fast devsel, latency 0, IRQ 16 Memory at d0000000 (64-bit, prefetchable) [size=256M] Memory at fe9f0000 (64-bit, non-prefetchable) [size=64K] I/O ports at dc00 [size=256] Expansion ROM at fea00000 [disabled] [size=128K] Capabilities: [50] Power Management version 3 Capabilities: [58] Express Legacy Endpoint, MSI 00 Capabilities: [a0] MSI: Enable- Count=1/1 Maskable- 64bit+ Capabilities: [100] Vendor Specific Information <?> Kernel driver in use: radeon Kernel modules: radeon ... ------------------------ --I have 2 Dell (Deltec) 24" S2409W monitors: # xrandr Screen 0: minimum 320 x 200, current 3840 x 1080, maximum 3840 x 1920 DisplayPort-1 connected 1920x1080+1920+0 (normal left inverted right x axis y axis) 531mm x 298mm 1920x1080 60.0*+ 1280x1024 75.0 60.0 1152x864 75.0 1024x768 75.0 60.0 800x600 75.0 60.3 640x480 75.0 59.9 720x400 70.1 DisplayPort-0 connected 1920x1080+0+0 (normal left inverted right x axis y axis) 531mm x 298mm 1920x1080 60.0*+ 1280x1024 75.0 60.0 1152x864 75.0 1024x768 75.0 60.0 800x600 75.0 60.3 640x480 75.0 59.9 720x400 70.1 |
sadly i do not know the ATI setup for dual display, but you will need to edit the xorg.conf file to setup the dual screen as far as i know.
http://www.ssma.us/debian_media.html that is WAY old, but the basics for the xorg.conf are there. hope it at least points you in the right direction. |
Yes, thanks. Actually, I had read that I should try ati.com for a newer driver. Actually, I had read I should not try that and should stick with "distro-approved" drivers, but that was not working.
So I went to ati.com and downloaded the driver.tar for linux dated 10/22/2009 and used the aticonfig bin util to set up my dual heads. It worked... so far no remorse. :-) |
glad it is working for you. yeah i wrote that when i was first getting into linux. i for one use the drivers from the manufactures more often then from the linux distro supplied.
i understand the reason for use the one supplied by the distro, but sometimes those drivers just dont work. the drivers from the card makers seem to always work. /shrug |
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