Issue 29072 in chromium-os: [Lumpy] Device freeze noticed when connected to external monitor.

[chrom...@googlecode.com]

Status: Untriaged
Owner: ----
CC: kr...@chromium.org, pall...@chromium.org
Labels: Type-Bug Pri-2 Area-Power Sev-2 Arch-x86 Mstone-19
ReleaseBlock-Stable

New issue 29072 by rajeevku...@chromium.org: [Lumpy] Device freeze noticed
when connected to external monitor.
http://code.google.com/p/chromium-os/issues/detail?id=29072

Chrome OS Version : 2046.17.0
Chrome Version : 19.0.1084.15
Type of computer : Lumpy PVT PS5
Network info : WiFi

What steps will reproduce the problem?
1. Sign-in to device
2. Connect to external monitor using DP-to-HDMi connector
3. Press "Ctrl + F4" a few times

What is the expected output?
3.1 Display switches between monitor & onboard screen

What do you see instead?
3.1 Device stopped responding with black display (backlight was on), after
switching a few times.

How frequently does this problem reproduce? (Always, sometimes, hard to
reproduce?)
Sometimes

What is the impact to the user, and is there a workaround? If so, what is
it?
Device crashes when trying to switch between monitor & onboard screen.

Note:
1.) The device went blank/black but the back light was on.
2.) There was no response to keyboard inputs.
3.) Holding the power button longer than long-press, powered off the device.
4.) After reboot there was a restore notification.
5.) Attached logs from the device.
6.) Link to crash-report:

http://crash.corp.google.com/search?query=client_id%3AB4C223EF071B6ABDD3F520AE5FDD145A

[chrom...@googlecode.com]

Comment #1 on issue 29072 by rajeevku...@chromium.org: [Lumpy] Device

freeze noticed when connected to external monitor.
http://code.google.com/p/chromium-os/issues/detail?id=29072

Link to logs from device:
http://cros-hwqual-5.mtv.corp.google.com/bugs/29072/

[chrom...@googlecode.com]

Updates:
Owner: mar...@chromium.org
Labels: -Area-Power Area-Graphics

Comment #2 on issue 29072 by arsc...@chromium.org: [Lumpy] Device freeze

noticed when connected to external monitor.
http://code.google.com/p/chromium-os/issues/detail?id=29072

(No comment was entered for this change.)

[chrom...@googlecode.com]

Updates:
Owner: sean...@chromium.org
Cc: mar...@chromium.org

Comment #7 on issue 29072 by zeli...@chromium.org: [Lumpy] Device freeze

noticed when connected to external monitor.
http://code.google.com/p/chromium-os/issues/detail?id=29072

messages contains following entries (whole bunch of them)

2012-04-05T14:57:32.253039-07:00 localhost kernel: [ 875.857394]
[drm:intel_dp_i2c_aux_ch] *ERROR* too many retries, giving up

marcheu@ thinks this has been fixed already by seanpaul@

seanpaul@, can you confirm that this fix was merged into M19?

[chrom...@googlecode.com]

Updates:
Owner: dis...@chromium.org
Cc: sean...@chromium.org

Comment #8 on issue 29072 by sean...@chromium.org: [Lumpy] Device freeze

noticed when connected to external monitor.
http://code.google.com/p/chromium-os/issues/detail?id=29072

Reassigning to disher since I believe marcheu is talking about the
cherry-pick he submitted https://gerrit.chromium.org/gerrit/#change,21553.

I pulled it into R19 for him after the initial fix
(https://gerrit.chromium.org/gerrit/#change,21575).

[chrom...@googlecode.com]

Comment #9 on issue 29072 by sean...@chromium.org: [Lumpy] Device freeze

noticed when connected to external monitor.
http://code.google.com/p/chromium-os/issues/detail?id=29072

I glanced at the code that's failing, and it looks like a new bug. I don't
think it's related to the cherry pick.

I wonder if the problem is bus contention caused by the trackpad (I think
it shares this bus). I'd be interested to know if there's correlation
between trackpad usage and failure.

[chrom...@googlecode.com]

Comment #10 on issue 29072 by sean...@chromium.org: [Lumpy] Device freeze

noticed when connected to external monitor.
http://code.google.com/p/chromium-os/issues/detail?id=29072

There's probably 2 bugs here, one is the i2c commands failing, and the
other is that the device stops responding. Neither should happen, but
hanging is *really* bad.