Re: Moving to a new GPU
On Sat, 2022-11-12 at 14:27 -0500, Felix Miata wrote:
Patrick O'Callaghan composed on 2022-11-12 13:55 (UTC):
> As mentioned in another sub-thread, I got it working by disabling
> the
> IGP via the BIOS. I'd still like to make this more dynamic by
> blacklisting the IGP at boot, but haven't managed this yet. It
> doesn't
> seem to be enough just to put i915 among the blacklisted modules.
Is i915.modeset=0 one of the boot parameters you tried that didn't
help?
No, I used i915 as the module name. Maybe that's the problem.
Were you always able to use both NVidia and Intel at the same time,
or only
offload from NVidia to Intel, thus only connecting physically to
Intel outputs?
I could reboot and mask the Nvidia card so Linux would leave it alone,
meaning my Windows VM could access it directly via PCI passthrough,
leaving the i915 for normal Linux operations. In operation, this
involved manually switching the monitor input back and forth (and the
kb and mouse, but I'm used to that).
I've so far not been able to reproduce this with the AMD card. I'm
pretty sure it's possible as it's a common configuration (though my CPU
is Intel and not AMD.)
If I can get this to work, I would then like to not to have to tweak
the BIOS settings to turn the i915 on or off again according to when I
wanted it. I would still need to flip the boot settings and reboot, but
I can live with that.
poc