tiomap-dev team mailing list archive

[Ricardo Salveti <rsalveti@xxxxxxxxxxxx>]

Patches target to fix this issue:
http://kernel.ubuntu.com/git?p=rsalveti/ubuntu-
maverick.git;a=shortlog;h=refs/heads/rsalveti-ti-omap4-fix-gfx-underflow

And you can find the generated kernel deb file with these fixes at:
http://people.canonical.com/~rsalveti/maverick/kernel/es2/linux-
image-2.6.35-903-omap4_2.6.35-903.18rsalveti2_armel.deb

Tested while using SGX (without these patches you can easily get an
underflow while using SGX), and I couldn't reproduce the issue anymore.

Please if someone could also test it'd be very helpful. Then I'll
forward the fixes to the kernel team.

-- 
omapdss DISPC error: GFX_FIFO_UNDERFLOW, disabling GFX
https://bugs.launchpad.net/bugs/653002
You received this bug notification because you are a member of TI OMAP
Developers, which is a subscriber of a duplicate bug (655746).

Status in “linux-ti-omap4” package in Ubuntu: In Progress

Bug description:
Platform: Panda board, 8 layers.
Processor: TI OMAP4

Symptom:  The screen will go black randomly - even when there is activity - and doesn't come back.  The following output can be found on the serial console (when enabled) and the log file:

 [  404.169006] omapdss DISPC error: GFX_FIFO_UNDERFLOW, disabling GFX

To recover the screen, change to another console and get back to tty7: CTRL + ALT + F1 followed by CTRL + ALT + F7

This is a known problem that is currently being addressed by TI.