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Case[1168]: T400, Fedora 11, Dual Head
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| Title: | T400, Fedora 11, Dual Head |
| Number: | 1168 |
| Created: | 01/11/2010 18:16 |
| Created By: | bemowski |
| Page Views: | 2342 |
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| Status: |
ACTIVE
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| Approver: | unassigned |
| Keywords: | thinkpad t400 dual head intel fglrx ati |
| Related Tickets: | |
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Detail
I just spent a full afternoon trying to replicate what I had running on my T61. I want the external monitor to have a secondary (auto-detected) x display. What a pain in the ass.
First:
- You need to generate a custom xorg.conf. Fedora 11 does not come with one.
- You need to run the system in discrete graphics mode - using the ATI Radeon driver. This is done in the BIOS.
- don't use the "intel" or "radeon" drivers
You need to install the fglrx proprietary drivers, now called catalyst in yum but still called fglrx in xorg.conf.
Here:
yum install xorg-x11-drv-catalyst
Next, you need to generate an xorg.conf that will give you what you want. You use aticonfig to generate an xorg.conf:
aticonfig --initial=dual-head
NOTE, this is not like xrandr. aticonfig DOES NOT actually configure the running system. It simply generates an xorg.conf file that will take effect on the next restart of X.
This is the key path. Here are a few references:
http://forums.fedoraforum.org/showthread.php?t=124634
http://en.gentoo-wiki.com/wiki/X.Org/Dual_Monitors/ATI
http://debian.wgdd.de/temp/fglrx_man/fglrx.4x.html
both livna-config-display and catalyst-config-display don't work when installed with the catalyst drivers from YUM. They both fail with some obscure python error.
Update
After initial success, I've tried everything to get sleep/resume working again - and failed. Looks like the ATI driver does not like to wake up... a real pain in the arse.
So I'm trying the same config with the Intel driver.
The intel driver will sleep/wake. I've confirmed this.
I want Dual X screens - this is known as "zaphod mode" in the parlance of our times.
The intel driver - i810 driver did support this mode. The i915 (newer) driver does NOT support this mode near as I can tell right now.
So I'm stuck w/ ATI zaphod dual screen - with no sleep/suspend, or working sleep/resume but no zaphod mode dual screen w/ intel.
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