On 29/04/13 12:48, Miner, Jonathan W (US SSA) wrote:
I've got a Dell Precision M4600 laptop, running Fedora 17.  Sometime
after kernel 3.7.9-104, the external VGA output no longer works.

If I boot with 3.7.9-104,with my projector attached, it is recognized.
If I boot with 3.8.4-102, external VGA devices are not recognized.

lspci:
01:00.0 VGA compatible controller: nVidia Corporation GF108 [Quadro
1000M] (rev a1)

(I've tried running the driver from nVidia, but that has screen
rendering problems, with blocks of random data instead of my normal
background pic)

- Jon


/var/log/Xorg.0.log ought to show what's happening.  Or 0 ... to 9.

'the driver from nvidia'?  Which one? but perhaps you want to run nouveau?

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