Hi, I don't know if this is helpful but I recently debugged a similar issue on the Lenovo P1Gen2. There the problem is only with the integrated graphics and an OLED screen - we tracked it down to an issue in the i915 driver where it wasn't giving enough time for eDP link training. It turned out this was due to the driver using the wrong clocks after a suspend and resume .
Intel recently up-streamed a fix (commit 2f216a85 - it went into 5.4-rc8) I'm working on doing a patch that I'm hoping to get into Debian to backport - just not done yet :) The patch is pretty small (I've attached it) so you might want to give it a go and see if it helps. Note - we did also test X1 extreme with OLED panel and didn't see a problem there....but it's a really subtle timing issue so some units might be more susceptible than others. Maybe worth a go? If it does make a difference let me know. Mark > -----Original Message----- > From: Jiri Kanicky <j...@ganomi.com> > Sent: Sunday, November 24, 2019 9:13 PM > To: 944...@bugs.debian.org > Subject: [External] Bug#944350: systemd: screen remains off after waking up > from suspend > > Further to the issue, when I set BIOS to discrete graphics only, I am > experiencing the same issue when booting the system from shutdown state. > The screen stays off, but the OS is booted and working.
0001-drm-i915-update-rawclk-also-on-resume.patch
Description: 0001-drm-i915-update-rawclk-also-on-resume.patch
