Video output with dove broken with 2.6.31-203

[Michael Casadevall]

The dove kernel's video output has broken with the most recent kernel uploads, causing my monitor to go into "Unable to display video mode" when using a newer kernel. This change seems to be related to "DOVEFB_DISPLAY_MODE=y" - which has not been set with previous Dove kernels which did have working video output.

The following command line has been used for video output: console=ttyS0,115200 console=tty0 mem=512M video=dovefb:lcd0:1280x768-24@60,lcd1:1024x768-16@60 clcd.lcd0_enable=0 clcd.lcd1_enable=1

[Oliver Grawert (ogra)]

confirming, i use the board as shipped with no changes (original uboot, pulling uImage via tftp, no changes to uboot options) my monitor goes into a way to hig video mode with this kernel ... the monitor is an about 3 years old LCD which can do up to 1280x1024 and should also properly report EDID data.

it used to work properly with all former kernel builds

[Oliver Grawert (ogra)]

oh, i see this bug is against 203.7, i actually use 203.8 atm

[Michael Casadevall (mcasadevall)]

ogra: the change that seems to have broken video out was 203.7; I'm currently building a test kernel to see if that's the case.

[Launchpad Janitor (janitor)]

This bug was fixed in the package linux-mvl-dove - 2.6.31-203.9

---------------
linux-mvl-dove (2.6.31-203.9) karmic; urgency=low

  [ Brad Figg ]

  * [Config] Dove Configuration: set lcd external clock to a fixed speed,
    1000MHz.
    - LP: #423675

 -- Tim Gardner <email address hidden> Mon, 07 Sep 2009 23:39:31 +0000

[Peter Liao (pliao)]

Please try to set on/off of DOVEFB_SINGLE_DISPLAY_ACCURATE_PCLK in kernel configuration to see if it helps. Thanks.

Best regards,
Peter Liao (Wen-Liang Liao)
Marvell Taiwan Ltd. Hsin-Chu Office, OS/Driver Team of Compiler Development Department
Tel: [phone] ext.6195337
Fax: [phone]

-----Original Message-----
From: <email address hidden> [mailto:<email address hidden>] On Behalf Of Ubuntu QA Website
Sent: Wednesday, November 18, 2009 3:40 AM
To: Peter Liao
Subject: [Bug 423675] Re: Video output with dove broken with 2.6.31-203

** Tags added: iso-testing

--
Video output with dove broken with 2.6.31-203
https://bugs.launchpad.net/bugs/423675
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mvl-dove in ubuntu.

Status in "linux-mvl-dove" package in Ubuntu: Fix Released
Status in "linux-mvl-dove" source package in Karmic: Fix Released

Bug description:
The dove kernel's video output has broken with the most recent kernel uploads, causing my monitor to go into "Unable to display video mode" when using a newer kernel. This change seems to be related to "DOVEFB_DISPLAY_MODE=y" - which has not been set with previous Dove kernels which did have working video output.

The following command line has been used for video output: console=ttyS0,115200 console=tty0 mem=512M video=dovefb:lcd0:1280x768-24@60,lcd1:1024x768-16@60 clcd.lcd0_enable=0 clcd.lcd1_enable=1