Comment 48 for bug 1884232

AceLan, I have tested your kernel and touchscreen and touchpad work, without the pci=nocrs GRUB option. Thank you very much!

I have two pieces of feedback on it that I think are specific to my system, but I want to log them in case they aren't. After selecting the patched 5.15 kernel in GRUB, I get the following message for a few seconds before the kernel starts to boot:

"error: null src bitmap in grub_video_bitmap_create_scaled.
Loading Linux 5.15.0-1043-generic ...
Loading initial ramdisk ...

Press any key to continue...."

I believe this is due to my custom GRUB theme, but it wasn't occurring on the 5.19 kernel. On both the 5.19 kernel and the 5.15.0-1043 kernel, booting is very slow - the kernel boot messages seem to take much longer than the stock 5.15 kernel. I assume this is for debugging purposes, but wanted to call it out just in case it's unexpected behavior. I'm more than happy to trade a slower boot for a working device of course! Again, feel free to ignore these quirks if they are specific to my system/expected behavior, I'm just being overly-thorough at this point.

Thank you for backporting this!