On Sat, Apr 29, 2023 at 09:55:45PM +0200, Kurt Garloff wrote:
Hi Ville,
While 0fc6fea41c71 drm/i915: Disable DC states for all commits (cherry picked from commit 41b4c7fe72b6105a4b49395eea9aa40cef94288d) does look correct to me, it does break modesetting on the GPD Pocket 3, a i7-1195G7 laptop. I run the kernel with fbcon=rotate:1 video=DSI-1:panel_orientation=right_side_up \ mem_sleep_default=s2idle No special i915 parameters. Hardware is described here: https://wiki.archlinux.org/title/GPD_Pocket_3
I disected this patch which was merged (backported) for 6.1.23. I currently run 6.1.26 with it reverted.
Without reverting it, when fbcon is switched to show the splash screen (GPD logo with Ubuntu added in on working kernels), the screen remains black (backlight on, but nothing displayed) and nothing happens any more.
Please file a bug at https://gitlab.freedesktop.org/drm/intel/issues/new
Boot both kernels (revert vs. no revert), passing 'drm.debug=0xe log_buf_len=4M' to the kernel cmdline, and attach the resulting dmesg from each to the bug.
Also would be good if you try to reproduce on the latest drm-tip (git://anongit.freedesktop.org/drm-tip drm-tip) as well.