hdmi out

Jon Nettleton jon.nettleton at gmail.com
Sun Aug 18 02:18:56 EDT 2013

On Sun, Aug 18, 2013 at 7:57 AM, Barry Vercoe <barry at laptop.org.au> wrote:

>  Of Course!!  I used to have that problem when I played long Csound demos
> -- overworking the Flt Pt processor yet untouched by human hands ...   I
> don't know why I didn't relate the two situations.
> Turned off power saving, and the problem immediately went away.
> No, power saving doesn't turn off automatically when hdmi is plugged in.
> Perhaps it should ...
> Or at least we should have a warning distributed with the hdmi cable that
> the port will turn off after 15 seconds with power saving on.
Could you check something quick for me.  Does the status
file /sys/devices/d420b000.display/pxa168fb_gfx.1/hpd exist on your system?


> Thanks all.
> -- b
> On 18/08/2013 5:26 p.m., Tom Parker wrote:
> On 18/08/13 17:05, Barry Vercoe wrote:
> OK, with tail -f ... messages, I do see a burst of messages and the
> projector shows the exact screen.  But only for 15 seconds, when the
> projector then goes blank and reverts to _No Signal_ until I touch
> something on the XO like the screen, track pad or some key.  Apparently
> the XO has stopped sending hdmi signals, so the projector is reporting
> exactly that.
> When the display goes blank, does the power light start flashing to
> indicate the laptop has gone to sleep?
> Try turning off power saving in the settings. When I was testing, the
> power saving automatically turned off when I plugged in an external display
> and turned on again when I unplugged it, but perhaps this isn't working on
> your laptop?
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