EDID failed with Connect monitors

Bug #882153 reported by Matt Waddel
8
This bug affects 1 person
Affects Status Importance Assigned to Milestone
IglooCommunity
Confirmed
Medium
vathsala

Bug Description

The 47" Connect monitors are not detected during boot so there is no display. These monitors work with other ARM low cost systems like Panda and Quickstart.

The entire boot message sequence is posted here.
https://pastebin.linaro.org/291/

Tags: graphics
Lee Jones (lag)
visibility: private → public
Changed in linaro-landing-team-ste:
assignee: nobody → Lee Jones (lag)
status: New → Confirmed
importance: Undecided → High
Anmar Oueja (anmar)
Changed in igloocommunity:
status: New → Confirmed
importance: Undecided → High
Revision history for this message
Lee Jones (lag) wrote :

I see the same thing with: Philips 244E monitor using HDMI.

Lee Jones (lag)
Changed in linaro-landing-team-ste:
assignee: Lee Jones (lag) → John Fredriksson (john-xj-fredriksson)
Changed in igloocommunity:
assignee: nobody → John Fredriksson (john-xj-fredriksson)
Changed in linaro-landing-team-ste:
assignee: John Fredriksson (john-xj-fredriksson) → nobody
importance: High → Undecided
status: Confirmed → Won't Fix
no longer affects: linaro-landing-team-ste
tags: added: graphics
Changed in igloocommunity:
assignee: John Fredriksson (john-xj-fredriksson) → vathsala (vathsala-nagaraju)
Revision history for this message
Patrik Klinger (patrik-klinger) wrote :

Is there any indication on what the effort would be to solve this bug?

Changed in igloocommunity:
milestone: none → 2012.04
Changed in igloocommunity:
milestone: 2012.04 → 2012.05
Revision history for this message
Anmar Oueja (anmar) wrote :

This bug is critical to resolve for the Connect in Hong Kong since it affects the TV displays we use.

Revision history for this message
Mathieu Poirier (mathieu.poirier-deactivatedaccount) wrote :

A couple of things need to happen in order to fix this problem.

1. Fix failing i2c tranfers when reading the EDID - could be that the timeout is set too aggressively.
2. Fix MCDE driver to handle the resolution handed out by HDMIServices, something that is not happening for the specific TVs that are used in this case.

Revision history for this message
Sunil Kamath (sunil-kamath) wrote :

Mathieu and Vathsala to work together for this issue as we do not have 47 inch monitor in Bangalore. Mathieu to update on workaround details.

Revision history for this message
Anmar Oueja (anmar) wrote :

Actually that is Matt Wadell (not Mathieu)

Revision history for this message
Mathieu Poirier (mathieu.poirier-deactivatedaccount) wrote : Re: [Bug 882153] Re: EDID failed with Connect monitors

On 12-05-11 04:32 AM, Sunil Kamath wrote:
> Mathieu and Vathsala to work together for this issue as we do not have
> 47 inch monitor in Bangalore. Mathieu to update on workaround details.
>
I'm not aware of any work around.

Revision history for this message
Matt Waddel (mwaddel) wrote :

This doesn't technically fix the EDID problem, but there is a work-around to display 1920x1080 using the fbset command. I was planning on using that at the HK Connect if there isn't any progress on EDID.

Revision history for this message
Anmar Oueja (anmar) wrote :

Matt: Does that mean the workaround is yielding good display. I
thought you were having some kid of wavy lines at the top of the
screen. If the workaround is enough, we can switch to other bugs.

anmar

Revision history for this message
Matt Waddel (mwaddel) wrote :

The workaround is yielding wavy lines on my small (22") HDMI screen and since that is not the screen we will be using at the HK Connect I don't want to spend anymore time trying to fix it here.

Ricardo did not see that problem on the screens they were using at UDS (which would be similar to the big screens we would be using in HK). So the fbset parameters will probably require some tweaking once we try the actual screens, but I think it is enough for now.

Revision history for this message
vathsala (vathsala-nagaraju) wrote :

Mathieu :

https://pastebin.linaro.org/291/ : i am not able to access these logs. Could you forward it to <email address hidden>

1. Fix failing i2c tranfers when reading the EDID - could be that the timeout is set too aggressively.
2. Fix MCDE driver to handle the resolution handed out by HDMIServices, something that is not happening for the specific TVs that are used in this case.
Could you enable hdmi logs at kernel level in config

    Can you enable the HDMI logs at kernel level :
 Devicedriver-->graphicsupport-->Av8100 driver support--> HDMI and Av8100 debug messages
 Please send us the with logcat and kernel messages

Revision history for this message
Anmar Oueja (anmar) wrote :

I put in the pastebin Matt did in an open one here: http://paste.ubuntu.com/992449/

Revision history for this message
Matt Waddel (mwaddel) wrote :

Here is the bootlog for the most recent snapshot (today):

http://paste.ubuntu.com/993016/

Here is the bootlog for the "same" kernel with "HDMI and Av8100 debug messages" enabled:

http://paste.ubuntu.com/993017/

I didn't see much difference, but maybe I'm missing something.

Here's the kernel info I used:

https://github.com/jcrigby/packaged-linux-linaro-3.3-ci/commit/56e4eb39c08ee2f221140f6742110ad5f44eb200

set to commit: 5f27d8d2890dc406839b4aba4c2f262dcb118a52

Changed in igloocommunity:
milestone: 2012.05 → 2012.06
Changed in igloocommunity:
milestone: 2012.06 → 2012.07
Changed in igloocommunity:
milestone: 2012.07 → 2012.08
Changed in igloocommunity:
importance: High → Medium
Changed in igloocommunity:
milestone: 2012.08 → none
To post a comment you must log in.
This report contains Public information  
Everyone can see this information.

Other bug subscribers