Arndale

Enabling HDMI support on Arndale-Ubuntu build

Bug #1078643 reported by Rony Nandy
20
This bug affects 3 people
Affects Status Importance Assigned to Milestone
Arndale
Fix Released
High
Tushar Behera
Linaro Ubuntu
Fix Released
High
Fathi Boudra
Linaro Ubuntu 13.04
linaro-landing-team-samsung
Fix Released
High
Tushar Behera
linaro-landing-team-samsung 2013.04

Bug Description

Good to have feature.It is a open work which anyone can take up,as the work is not in the priority list from the Enterprise Server point of view.

Rony Nandy (rony-nandy)
Changed in arndale:
status: New → Won't Fix
Revision history for this message
Tushar Behera (tusharbehera) wrote :

HDMI is found to be working with 2013.03 release images at some setups. The issue might be because of failure to read EDID data from certain monitors. Adding following boot-time option to u-boot environment might help.

drm_kms_helper.edid_firmware=edid-1920x1080.fw

Changed in arndale:
status: Won't Fix → In Progress
importance: Wishlist → High
assignee: nobody → Tushar Behera (tusharbehera)
Changed in linaro-landing-team-samsung:
status: New → In Progress
importance: Undecided → High
assignee: nobody → Tushar Behera (tusharbehera)
milestone: none → 2013.04
Revision history for this message
Botao (botao-sun) wrote :

@Tushar, After manually added "drm_kms_helper.edid_firmware=edid-1920x1080.fw" to bootargs, HDMI works well now. The full string of bootargs is:

console=tty0 console=ttySAC2,115200n8 drm_kms_helper.edid_firmware=edid-1920x1080.fw root=UUID=a36c3296-1cf0-4481-884f-86f7419e1821 rootwait ro

Would you please check in this change to our repository?

Revision history for this message
Botao (botao-sun) wrote :

For comment #2, the build I'm using is:

http://snapshots.linaro.org/quantal/pre-built/arndale/280/arndale-quantal_server_20130401-280.img.gz

Revision history for this message
Tushar Behera (tusharbehera) wrote :

@Fathi, Can you please add following environment variable to bootargs (through linaro-image-tools)?

drm_kms_helper.edid_firmware=edid-1920x1080.fw

summary: - HDMI enablement
+ Enabling HDMI support on Arndale-Ubuntu build
Revision history for this message
Fathi Boudra (fboudra) wrote :

the parameter will force the resolution. It will work only on monitor that supports this resolution.

Changed in linaro-ubuntu:
milestone: none → 13.04
Fathi Boudra (fboudra)
Changed in linaro-ubuntu:
status: New → In Progress
importance: Undecided → High
assignee: nobody → Fathi Boudra (fboudra)
Revision history for this message
Botao (botao-sun) wrote :

@Fathi, Yes, looks like that, 1920x1080 is a hard code there. I think my TV supports it well.

Now with image 286:

http://snapshots.linaro.org/quantal/pre-built/arndale/286/arndale-quantal_server_20130408-286.img.gz

The HDMI display works well on Samsung Arndale board without manually boot argument setting.

Tushar Behera (tusharbehera)
Changed in arndale:
status: In Progress → Fix Released
Changed in linaro-landing-team-samsung:
status: In Progress → Fix Released
Revision history for this message
Fathi Boudra (fboudra) wrote :

Mark fix-released:
https://git.linaro.org/gitweb?p=hwpack/arndale.git;a=commitdiff;h=3c4a7122f3e2df57ccb8d96be474e901c4e4d28f

I've created another bug to track the proper fix for the HDMI issue:
https://bugs.launchpad.net/arndale/+bug/1168262

Changed in linaro-ubuntu:
status: In Progress → Fix Released
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