Also just tried *enabling* the IGP and keeping PEG as the primary graphics. Video output stayed on the discrete card output and the same stack trace happened when booting without nomodeset. So now I'm back to setting it as disabled as it had been before.
2015-01-14 23:59 GMT-03:00 Federico <federicotg@xxxxxxxxx>:
AFAIK this BIOS requires me to disable IGP to even use the discrete graphics. At least that's the first thing I had to do when I first installed the card and every time I wanted to change the monitor connection.Here's how "disabled" it is:
https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1386973/+attachment/4298792/+files/20150114_234953.png2015-01-14 23:46 GMT-03:00 Michel Dänzer <michel@xxxxxxxxxxx>:On 15.01.2015 11:10, Federico wrote:
> Here's the 3.18 32-bits 60 lines per screen stack trace. Always using
> softlockup_panic=1.
>
> Quite similar, but slightly different. Hopefully, useful.
>
> https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1386973/+attachment/4298769/+files/20150114_230142.png
Looks like it hangs while reading the video BIOS ROM.
If the integrated GPU is still enabled in the system BIOS setup, does
disabling it avoid the problem?
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