Created attachment 143051 [details]
On boot, laptop display goes black, however desktop etc loads (confirmed by swapping to tty and outputting data to file whilst still being unable to see anything).
If I boot with nomodeset and manually setting resolution to 800x1280, I can get to desktop but cannot rotate screen etc.
-- system architecture: ("uname -m")
-- kernel version: ("uname -r").
4.18.0-10-generic (i have attempted to use drm-tip but cannot boot, i think emmc support needs to be enabled? I don't know how to do this)
-- Linux distribution:
-- Machine or mother board model:
Happy to try drm-tip if anyone can tell me how to get it booting.
dmesg is attached
>Happy to try drm-tip if anyone can tell me how to get it booting
https://01.org/linuxgraphics/documentation/build-guide-0 here you can find manual.
(could be that with defconfig you'll fail, so worse to try use simply "config" command, and use your current system config (from /boot folder, but copy it before) with a name .config (in GUI you will find this option, something like "use my own config")
As I saw, intel guys also asking for this part, when you are booted with latest drm-tip:
full dmesg from boot with kernel parameters drm.debug=0x1e log_buf_len=4M.
Thanks a lot for submitting a bug!
As Denis mentioned - Please try to reproduce the error using drm-tip (https://cgit.freedesktop.org/drm-tip) and kernel parameters drm.debug=0x1e log_buf_len=4M, and if the problem persists attach the full dmesg from boot.
I have followed the build guide and installed, however I cannot boot the new kernel. I have been searching for some way to fix this and have asked for help in a few forums now.
I understand that this is not a help forum, but if anyone understands why this might occur after following the build guide, that would be a great help.
Gave up waiting for root device. common problems:
Boot args (cat /proc/cmdline)
Check rootdelay= (did the system wait long enough?)
Check root= (did the system wait for the right device?)
Missing modules (cat /proc/modules; ls /dev) ALERT! /dev/disk/by-uuid/blahblahblah does not exist.
Dropping to shell!
Created attachment 143114 [details]
please find drm-tip log file attached
CPU looks to be GLK N4000, document that.
Jani, looks like mipi/dsi issue?
It's DSI all right. Might be a dupe of bug #108826. Nothing suspicious AFAICS in dmesg.
On Ci https://intel-gfx-ci.01.org/tree/drm-tip/fi-glk-dsi.html system shows nicely desktop too.
Stan, do you see pattern here?