<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_REOPENED " title="REOPENED - Graphical corruption with PSR - affects Plymouth only" href="https://bugs.freedesktop.org/show_bug.cgi?id=107966#c17">Comment # 17</a> on <a class="bz_bug_link bz_status_REOPENED " title="REOPENED - Graphical corruption with PSR - affects Plymouth only" href="https://bugs.freedesktop.org/show_bug.cgi?id=107966">bug 107966</a> from <a class="email" href="mailto:tseewald@gmail.com" title="Tom Seewald <tseewald@gmail.com>"> Tom Seewald</a> <pre>Potential workaround found: Setting the kernel parameter i915.fastboot=1 (with i915.enable_psr=1) results in no screen corruption in plymouth's LUKS prompt. This appears to be effective on both drm-tip and Fedora 29's 4.20.x kernel. This issue was reproducible on every boot, and so far I cannot reproduce the screen corruption with fastboot enabled after 10+ boot cycles. Any idea why fastboot has an effect on this? I know that fastboot is likely to be set by default on SKL+ in the next kernel release, but it's still a bit strange that there's some interaction between psr and fastboot being disabled.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> <li>You are on the CC list for the bug.</li> </ul> </body> </html>