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newsIntel and AMD video conflict
I reported yesterday about the result of plugging in my AMD Radeon HD6870 card:
http://bkhome.org/news/201712/amdati-barts-xt-radeon-hd-6870-card.html
Quoting:
Booting Easy Pyro64 0.6.4 from USB-drive, get a desktop. Fine, but 'glxinfo' reported software rasterising. Also, exit from X to commandline results in a blank screen. Also, under certain conditions, that I have not yet narrowed down, there is a hang at bootup.
My midi-tower PC also has on-board Intel video. There is a file, /etc/modeprobe.d/i915.conf containing this:
options i915 modeset=1
And /etc/modeprobe.d/radeon.conf, both with this:
options radeon modeset=1
I simply removed the i915.conf file, rebooted, and that fixed the exit-from-X-to-commandline, also bootup-to-commandline-no-X.
...er, but then I restored i915.conf, and exit-from-X-to-commandline, also bootup-to-commandline-no-X, are still fixed. Hmmm. The UEFI-Setup is showing on-board video as disabled ...the UEFI must have done that automatically? I don't know. There's too much that I don't know here.
This needs more testing, and rerwin's thoughts on this are also very helpful:
http://www.murga-linux.com/puppy/viewtopic.php?p=939428#939428
http://www.murga-linux.com/puppy/viewtopic.php?p=940531#940531
I will append to this post as I discover more.