F16: dual monitor woes (nouveau)

Adam Williamson awilliam at redhat.com
Fri Nov 11 20:03:03 UTC 2011

On Fri, 2011-11-11 at 12:54 -0700, Jerry James wrote:
> I upgraded my home machine to F16 on Wednesday, and liked it so much
> that I decided to upgrade my work machine today.  That didn't go quite
> as smoothly.
> I've got a dual monitor setup at work, with what lspci calls "nVidia
> Corporation G94 [GeForce 9600 GT] (rev a1)".  I did a fresh install
> with a DVD.  After booting up, the initial screen (with the install
> and troubleshoot options) came up on the left monitor; the right
> monitor was blank.  After choosing to install, X came up on both
> monitors, but the windows were displayed on the right monitor only.
> The left monitor was black, but I could move the mouse over there.
> The problem, though, is that the windows were apparently 2 monitors
> wide.  The "back" and "forward" buttons were not visible, presumably
> being one monitor width off to the right of the right monitor.  I got
> by for awhile by tabbing twice and hitting Enter to activate the
> "forward" button, but when I got to the part where I had to decide
> which drives are data and which need to be formatted, I could not go
> on, as the arrows to move drives between the two areas were off the
> screen also.

That's https://bugzilla.redhat.com/show_bug.cgi?id=725219 .

> So I restarted, chose the VESA option, got the left monitor only, and installed.

Another option is just to disconnect one of the monitors for
installation and plug it back in when you're done.

> After installation, I removed /etc/X11/xorg.conf (which specified the
> VESA driver), and rebooted.  But X still came up on only the left
> monitor.  Xorg.log indicated a drm failure.  I found a new libdrm in
> -testing, installed it, gave feedback on a typo in the udev rules, and
> rebooted.  No change.

You need to remove 'nomodeset' from the kernel parameters.
Adam Williamson
Fedora QA Community Monkey
IRC: adamw | Twitter: AdamW_Fedora | identi.ca: adamwfedora

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