Bug 99469 - Unable to switch to console mode by press Ctrl-Alt-F2 on Chromebook with drm-intel-nightly kernel
Summary: Unable to switch to console mode by press Ctrl-Alt-F2 on Chromebook with drm-...
Status: CLOSED NOTOURBUG
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
Keywords:
Depends on:
Blocks:
 
Reported: 2017-01-20 08:12 UTC by Glody Guo
Modified: 2017-06-19 06:50 UTC (History)
2 users (show)

See Also:
i915 platform: SKL
i915 features: display/Other

Attachments
kernel log when switch between console and UI (924 bytes, text/plain)
2017-05-23 06:44 UTC, jenny cao 		no flags Details
View All

Description Glody Guo 2017-01-20 08:12:09 UTC 
System Environment
=======
Board Name: Lars
CPU (including SKU, stepping): Intel(R) Celeron(R) CPU 3855U @ 1.60GHz
Memory Configuration: 4G
OS image version:9128.0.2016_12_28_1426
Chromium browser version: 56.0.2895.0
IGT version: f683929
Kernel version: 4.10.0-rc1-11391-g81f56e3
Regression?
=======
Bug detailed description
=======
Install latest drm-intel-nightly kernel(4.10.0-rc1-11391-g81f56e3) on Chromebook, then unable to switch to console mode by press Ctrl-Alt-F2
Reproduce Steps
==============
1. Boot ChromeOS
2. When login screen is displayed, press Ctrl-Alt-F2
Expected Result
=============
Switch to console mody after press Ctrl-Alt-F2
Actual Result
===========
Unable to switch to console mode by press Ctrl-Alt-F2
Analysis & Root Cause
===================
Comment 1 yann 2017-01-20 16:06:14 UTC 
Can you attach kernel log and give some hints on the reason why you are suspecting i915?
Comment 2 Ricardo 2017-02-24 15:31:57 UTC 
Hi please review prior comments and important to add logs, once you provided the necessary information please move the bug to REOPEN state
Comment 3 Glody Guo 2017-02-28 06:40:30 UTC 
This issue only can be reproduce on latest kernel(4.10.0-rc1-11391-g81f56e3). On ChromeOS default kernel(v3.18 for SKL), it works well. So we assume it's kernel related issue. 

Which kernel log do you want? We will retest it and will catch dmesg log and update this issue later.
Comment 4 Ricardo 2017-02-28 15:30:17 UTC 
Once you update the bug with the dmesg please set the bug to REOPEN
Comment 5 Ricardo 2017-03-03 17:48:31 UTC 
Again as in your other bug #99470 there is no logs attach. here is information for you to help you 
https://01.org/linuxgraphics/documentation/bugs-and-debugging please provide more information.

At the same time you can also use latest https://cgit.freedesktop.org/drm-tip to test

Once the information is provided again move the status to Reopen
Comment 6 Jari Tahvanainen 2017-04-10 09:12:47 UTC 
Timeout - assuming to be fixed. If problem still persist please reopen bug with proper data (see https://01.org/linuxgraphics/documentation/how-report-bugs).
Comment 7 jenny cao 2017-05-23 06:43:58 UTC 
this issue could be reproduced on latest chrome os image +  upstream kernel(drm-tip branch)

kernel version: 4.12.0-rc2-14320-gec077216f693-dirty
OS image version:9559.0.2017_05_23_1122
Chromium browser version: 60.0.3101.0
Firmware version: Google_Lars.7829,127.0

The screen show black when I use "Ctrl-Alt-F2" to switch to console.
dmesg shows :
[  124.924367] frecon(260): 
[  124.924378] Could not set master when switching to foreground Invalid argument.

[  124.924537] DEBUG: tsm_screen: 
[  124.924540] new screen

[  124.924566] DEBUG: tsm_vte: 
[  124.924569] new vte object

and not able to switch back to UI by "Ctrl-Alt-F1",
dmesg log shows: 
[  125.891071] frecon(260): 
[  154.012310] frecon(260): 
[  154.012324] Chrome failed to take display ownership. Trying again.

[  154.514180] frecon(260): 
[  154.514187] Chrome failed to take display ownership. Trying again.

[  155.016262] frecon(260): 
[  155.016269] Chrome failed to take display ownership. Trying again.

[  155.518382] frecon(260): 
[  163.208521] frecon(260): 
[  163.208537] Could not set master when switching to foreground Invalid argument.

[  163.563262] frecon(260): 
[  163.563272] Unable to set crtc: Permission denied

[  163.563510] frecon(260): 
[  163.563514] drmModeDirtyFB failed: Permission denied
Comment 8 jenny cao 2017-05-23 06:44:59 UTC 
Created attachment 131444 [details]
kernel log when switch between console and UI
Comment 9 jenny cao 2017-06-19 06:50:20 UTC 
close this bug since it is not a kernel bug and a patch in chromium can enable the  console mode

https://chromium-review.googlesource.com/q/I7b8a00ca8e21321019875

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