On 9/17/18 11:55 PM, zfnoc...@gmail.com wrote:
Just a heads up that setting i915.enable_psr=1 causes my Dell Latitude 7490 (Intel UHD 620) to display graphical corruption*only* in Plymouth while entering in my drive's password. I understand that PSR is currently not supported on Fedora, however it looks like the Intel developers are planning to have it enabled by default next kernel release[1] for Skylake and newer.
I recommend that you report this with upstream so they can fix it. https://bugs.freedesktop.org/enter_bug.cgi?product=DRI (DRM/intel)
I have to say, PSR seems to be otherwise fully baked, once I'm past LUKS there are no graphical issues at all. I can reproduce this on drm-intel-next and mainline, but I'm not sure at this point if it's a problem with Plymouth or i915.
I've had it enabled on my Haswell Iris graphics laptop for a few years without any issues. Granted the same code paths are not followed as with your hardware, but it is working perfectly in some use cases.
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