linaro-release team mailing list archive

[Ricardo Salveti <rsalveti@xxxxxxxxxxxx>]

On Wed, Nov 23, 2011 at 8:01 PM, warmcat <894073@xxxxxxxxxxxxxxxxxx> wrote:
> At request of Seb, we backported Tomi's hdmi patches that went upstream
> after 3.1 release from tracking to tilt-3.1.  They provide some good
> architectural improvements but expose a big problem with two heads on
> dss, there is no mediation about who owns the common pll.  Result is
> that i had to disable the new dvi "panel" driver to stop hdmi
> workability getting destroyed by dvi resetting the pll to something
> else.

Marking as confirmed at the LT side then.

> I discussed with Tomi he says he may add support for pll management but
> 'no promises'.  In themeanwhile best way is deconfigure dvi panel (i
> guess you didn't configure it) and just use hdmi.

With previous kernel the DRM driver would probe and enable the DVI
panel if detected, don't know if the behavior has changed for this
kernel.


** Tags added: linaro-ubuntu lt-panda secondary-video-out

** Changed in: linaro-landing-team-ti
       Status: New => Confirmed

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https://bugs.launchpad.net/bugs/894073

Title:
  [regression] No DVI output on the PandaBoard with kernel 3.1.0-1402
  -linaro-lt-omap

Status in Linaro Texas Instruments Landing Team:
  Confirmed
Status in Linaro Ubuntu Evaluation Builds:
  Confirmed

Bug description:
  Just upgraded my packages, this pulled in linux-image-3.1.0-1402
  -linaro-lt-omap. After a reboot, there is no output on the DVI
  monitor. After restoring the boot partition from yesterday's backup
  (switching back to 3.1.0-1401-linaro-lt-omap), the DVI output works
  again.

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