hdmi display not working with staging-origen manifest

[Amit Pundir]

HDMI display not working with Samsung LT's latest origen kernel http://git.linaro.org/landing-teams/working/samsung/kernel.git

[Abhishek Paliwal (abhishek-paliwal)]

Observed with https://android-build.linaro.org/builds/~linaro-android/staging-origen/#build=44 as well

[Abhishek Paliwal (abhishek-paliwal)]

Unable to get HDMI out working on :
https://android-build.linaro.org/builds/~linaro-android/staging-origen-11.11-release/#build=1

[Abhishek Paliwal (abhishek-paliwal)]

This is blocking issue to test Origen board(unless someone has additional LCD display)

[Amit Pundir (pundiramit)]

Graphics Allocator(Gralloc) on Android iterates from fb0 to fbX till it doesn't find a valid fb descriptor. Gralloc finds and open a valid Fb descriptor well before trying Origen's hardcoded HDMI fb descriptor(/dev/graphics/fb10). Need to find a generic solution to support both lcd and hdmi displays from gralloc.

[Angus Ainslie (angus-akkea)]

There are additional LCDs in Cambridge if you require one to solve this issue.

Talk to Joey about getting one.

--
Angus Ainslie <email address hidden>
Team Lead, Samsung Landing Team

[Zach Pfeffer (pfefferz)]

Lets go with boot args. Amit will add.

[Abhishek Paliwal (abhishek-paliwal)]

Valid for : ./linaro-image-tools/linaro-android-media-create --mmc /dev/sdb --dev snowball_sd --system system.tar.bz2 --userdata userdata.tar.bz2 --boot boot.tar.bz2 as well

[Abhishek Paliwal (abhishek-paliwal)]

Ignore above comment(copy paste error)

Valid for https://android-build.linaro.org/builds/~linaro-android/staging-origen-11.11-release/#build=3 as well.

[Zach Pfeffer (pfefferz)]

This should now be done on ICS.

[Angus Ainslie (angus-akkea)]

On Mon, Nov 28, 2011 at 9:24 AM, Zach Pfeffer <email address hidden> wrote:
> This should now be done on ICS.
>

Does ICS allow for dual head support ?

> ** Changed in: linaro-android
>   Importance: Medium => High
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/888644
>
> Title:
>  hdmi display not working with staging-origen manifest
>
> Status in Linaro Android:
>  Confirmed
>
> Bug description:
>  HDMI display not working with Samsung LT's latest origen kernel
>  http://git.linaro.org/landing-teams/working/samsung/kernel.git
>
> To manage notifications about this bug go to:
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>

--
Angus Ainslie <email address hidden>
Team Lead, Samsung Landing Team

[Abhishek Paliwal (abhishek-paliwal)]

HDMI out does not work on https://android-build.linaro.org/builds/~linaro-android/staging-origen/#build=60

[Amit Pundir (pundiramit)]

Dual head support is still not there in ICS as far as I looked into. Framebuffer initialization still happens as gralloc.

Current status is that I can map fb0 to hdmi (at default resolution) through bootargs. Next thing to do is to run it at 1080p.

[Abhishek Paliwal (abhishek-paliwal)]

Observed on https://android-build.linaro.org/builds/~linaro-android/staging-origen-11.12-release/#build=2 as well.

[Amit Pundir (pundiramit)]

Not going to be fixed in 11.12 release.

Current status is that LCD output (fb0) can be mapped to HDMI (at default resolution) through bootargs. Next thing to do is to run it at 1080p.

[Zach Pfeffer (pfefferz)]

Please talk to <email address hidden> about adding boot arg edits to linaro-android-media-create.

[Amit Pundir (pundiramit)]

The attached kernel patch contains a workaround for this bug. Default display remains LCD. But with an additional bootarg "s5p_tvout_fb.hdmi_lcd_display=1", LCD display can be routed to HDMI @1024x600 resolution.

[Sangwook Lee (sangwook)]

Amit's patch was pushed to

git: git://git.linaro.org/landing-teams/working/samsung/kernel.git
branch: android
tag : android-release-2012-01-hdmi

[Amit Pundir (pundiramit)]

With an additional bootarg "s5p_tvout_fb.hdmi_lcd_display=1", LCD display can be routed to HDMI @1024x600 resolution.