Bug 109267 - Display not working with i915 driver
Summary: Display not working with i915 driver
Status: NEW
Alias: None
Product: DRI
Classification: Unclassified
Component: DRM/Intel (show other bugs)
Version: XOrg git
Hardware: x86-64 (AMD64) Linux (All)
: medium normal
Assignee: Intel GFX Bugs mailing list
QA Contact: Intel GFX Bugs mailing list
URL:
Whiteboard: ReadyForDev, Triaged
Keywords:
Depends on:
Blocks:
 
Reported: 2019-01-10 04:56 UTC by Danni Uptlen
Modified: 2019-01-16 07:22 UTC (History)
3 users (show)

See Also:
i915 platform: GLK
i915 features: display/DSI


Attachments
dmesg (58.87 KB, text/plain)
2019-01-10 04:56 UTC, Danni Uptlen
no flags Details
dmesg drm-tip (582.94 KB, text/plain)
2019-01-15 02:58 UTC, Danni Uptlen
no flags Details

Note You need to log in before you can comment on or make changes to this bug.
Description Danni Uptlen 2019-01-10 04:56:51 UTC
Created attachment 143051 [details]
dmesg

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")
x86_64
-- 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:
xubuntu 18.10
-- Machine or mother board model:
Lenovo D330-10IGM

Happy to try drm-tip if anyone can tell me how to get it booting.

dmesg is attached
Comment 1 Denis 2019-01-10 09:28:11 UTC
>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.
Comment 2 Radosław Szwichtenberg 2019-01-10 13:10:45 UTC
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.
Comment 3 Danni Uptlen 2019-01-15 01:38:54 UTC
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!
Comment 4 Danni Uptlen 2019-01-15 02:58:05 UTC
Created attachment 143114 [details]
dmesg drm-tip

please find drm-tip log file attached
Comment 5 Jani Saarinen 2019-01-15 07:12:03 UTC
CPU looks to be GLK N4000, document that.
Comment 6 Jani Saarinen 2019-01-15 07:15:28 UTC
Jani, looks like mipi/dsi issue?
Comment 7 Jani Nikula 2019-01-15 07:53:25 UTC
It's DSI all right. Might be a dupe of bug #108826. Nothing suspicious AFAICS in dmesg.
Comment 8 Jani Saarinen 2019-01-15 07:57:39 UTC
On Ci https://intel-gfx-ci.01.org/tree/drm-tip/fi-glk-dsi.html system shows nicely desktop too.
Comment 9 Jani Saarinen 2019-01-15 08:39:22 UTC
Stan, do you see pattern here?


Use of freedesktop.org services, including Bugzilla, is subject to our Code of Conduct. How we collect and use information is described in our Privacy Policy.