[f16] Screen goes blank [due to loss of video?]

[Gene Smith]

Since moving to f16 (from f14) sometimes my screen goes blanks for no 
apparent reason. KDE power setting and screen saver settings seem OK. 
Also, it doesn't happen on every KDE login but when it does its like the 
computer has turned off and there is no video signal and the monitor 
goes to sleep until I move the mouse or press a key. Then monitor might 
only stays on a few seconds until it goes off again.

Sometimes logging off and back on fixes it. Today it seems to be OK. Not 
sure if this is h/w or s/w caused.

-gene

[Ed Greshko]

On 01/21/2012 11:50 AM, Gene Smith wrote:
>  Since moving to f16 (from f14) sometimes my screen goes blanks for
> no
>  apparent reason. KDE power setting and screen saver settings seem OK.
>  Also, it doesn't happen on every KDE login but when it does its like
>  the computer has turned off and there is no video signal and the
>  monitor goes to sleep until I move the mouse or press a key. Then
>  monitor might only stays on a few seconds until it goes off again.
>
>  Sometimes logging off and back on fixes it. Today it seems to be OK.
>  Not sure if this is h/w or s/w caused.
>  
Not seeing that problem here...  I suppose the questions I'd ask are:

1.  How did you go from F14 to F16?  Fresh install, or?

2.  What is your video hardware?

3.  What is the output of   xset q ?

-- 
Do not condemn the judgment of another because it differs from your own.
You may both be wrong. -- Dandemis

[Patrick O'Callaghan]

On Fri, 2012-01-20 at 22:50 -0500, Gene Smith wrote:
>  Since moving to f16 (from f14) sometimes my screen goes blanks for no
>
>  apparent reason. KDE power setting and screen saver settings seem OK. 
>  Also, it doesn't happen on every KDE login but when it does its like the 
>  computer has turned off and there is no video signal and the monitor 
>  goes to sleep until I move the mouse or press a key. Then monitor might 
>  only stays on a few seconds until it goes off again.
>  
>  Sometimes logging off and back on fixes it. Today it seems to be OK. Not 
>  sure if this is h/w or s/w caused. 
Same here. I mentioned it a while back on this list when the screen was
blanking every few seconds unless I had some mouse or keyboard activity,
then it went away after an update, then it came back (also after an
update) but with a somewhat longer delay between blanks. Right now it
happens on some logins and not others. This randomness makes it hard to
pin down.

It does not appear to happen under Gnome, but I've only tried it briefly
so if it's random it would be hard to be sure.

Screensaver is off. Power settings are set to "performance" (this is a
desktop). Graphics is basic on-board Intel.

poc

[Gene Smith]

Ed Greshko wrote, On 01/20/2012 10:56 PM:
>  On 01/21/2012 11:50 AM, Gene Smith wrote:
> > Since moving to f16 (from f14) sometimes my screen goes blanks for no
> > apparent reason. KDE power setting and screen saver settings seem OK.
> > Also, it doesn't happen on every KDE login but when it does its like
> > the computer has turned off and there is no video signal and the
> > monitor goes to sleep until I move the mouse or press a key. Then
> > monitor might only stays on a few seconds until it goes off again.
> >
> > Sometimes logging off and back on fixes it. Today it seems to be OK.
> > Not sure if this is h/w or s/w caused.
> >
>
>  Not seeing that problem here...  I suppose the questions I'd ask are:
>
>  1.  How did you go from F14 to F16?  Fresh install, or? 
Not fresh -- did upgrade
>  2.  What is your video hardware? 
Radeon HD  4200 on Mboard.
>  3.  What is the output of   xset q ? 
Keyboard Control:
   auto repeat:  on    key click percent:  0    LED mask:  00000000
   XKB indicators:
     00: Caps Lock:   off    01: Num Lock:    off    02: Scroll Lock: off
     03: Compose:     off    04: Kana:        off    05: Sleep:       off
     06: Suspend:     off    07: Mute:        off    08: Misc:        off
     09: Mail:        off    10: Charging:    off    11: Shift Lock:  off
     12: Group 2:     off    13: Mouse Keys:  off
   auto repeat delay:  250    repeat rate:  30
   auto repeating keys:  00ffffffdffffbbf
                         fadfffefffedffff
                         9fffffffffffffff
                         fff7ffffffffffff
   bell percent:  50    bell pitch:  400    bell duration:  100
Pointer Control:
   acceleration:  20/10    threshold:  2
Screen Saver:
   prefer blanking:  yes    allow exposures:  yes
   timeout:  0    cycle:  600
Colors:
   default colormap:  0x20    BlackPixel:  0x0    WhitePixel:  0xffffff
Font Path:
   catalogue:/etc/X11/fontpath.d,built-ins
DPMS (Energy Star):
   Standby: 48    Suspend: 72    Off: 96		<<<<<--short standby!
   DPMS is Enabled
   Monitor is On

xset -dpms seems to fix the problem until re-login. On each login, it 
appears the DPMS parameters were coming up with random value or with 
DPMS disabled. I think my problem is that in kde setting for 
"performance" power profile I had unchecked all the options. This 
*seems* to stop KDE from setting any dpms options and they come up 
random. If I check and set at least "Screen Energy Saving" and set it to 
a reasonable value, like 90 min, then on login the DPMS "Standby" value 
follows it and DPMS is enabled and I don't see a quick screen blank. 
("Suspend" and "Off" seem to get set to even longer times but I
don't 
think are relevant for my Monitor.)

So now with "Screen Energy Saving" and "Suspend Session" set
respective 
to 90 and 120 minutes, I consistently see this with xset q after re-login:

DPMS (Energy Star):
   Standby: 5400    Suspend: 8100    Off: 10800	<<<< now stby is 90 min.
   DPMS is Enabled
   Monitor is On

I will see over time if this actually fixes the problem.

-gene

[Ed Greshko]

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On 01/22/2012 07:34 AM, Gene Smith wrote:
>  So now with "Screen Energy Saving" and "Suspend
> Session" set respective 
to 90 and 120 minutes, I consistently see this with
xset q after re-login:
>  DPMS (Energy Star):
>  Standby: 5400 Suspend: 8100 Off: 10800 <<<< now stby is 90 min.
>  DPMS is Enabled
>  Monitor is On
>
>  I will see over time if this actually fixes the problem. 
Yeah....  Standby: 48    Suspend: 72    Off: 96    was kind of
short....  :-)

If you find that everything works well after these changes you may want
to file a bugzilla with your observation about random DPMS settings,
after you verify everything.


- -- 
Do not condemn the judgment of another because it differs from your own.
You may both be wrong. -- Dandemis
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