Author Topic: Screen Ghosting  (Read 4671 times)

wmadan

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Screen Ghosting
« on: October 25, 2004, 04:29:36 pm »
Recently I reflashed from pdaxrom to Cacko 1.21b, but discovered that the screen appeared ghosted. So, I did a NAND restore to the original ROM and there was no ghosting effect. So, I converted the ROM to English.  I don't have ghosting effect in pdaxrom either.

What causes the ghosting effect in Cacko? How can I get rid of it?

Chaos

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Screen Ghosting
« Reply #1 on: October 25, 2004, 04:42:57 pm »
"Ghosted"?

What do you mean by that? More info, please!
Sorry. I just don't have the time...

anonuk

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Screen Ghosting
« Reply #2 on: October 25, 2004, 04:48:24 pm »
OK, type this at the console:

su   <enter>     to become superuser then

echo 75 > /proc/driver/w100/fastsysclk     <enter>

the screen will flash and the ghosting will be gone, but it will come back again when you reboot. I think you can add the line to qpe.sh to automatically set this on bootup.

The problem was the screen refresh rate being set wrong, the above command sets it to 75, I have the same problem on cacko the last few weeks since i reflashed....
* C3100 with Cacko 1.23 and debian (pocketworkstation) - 1Gb SD / 1Gb CF / Prism Wifi
* C-860 with Cacko 1.21b/pdaXrom dualboot with 256Mb CF / 512 Mb SD / Prism Wifi
* SL-5500 with Cacko rom with 128Mb SD home on SD / 96 Mb CF

troywill1

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Screen Ghosting
« Reply #3 on: November 18, 2004, 05:06:29 pm »
I flashed the C760 I just received with Cacko 1.21b and I had major ghosting.  The procedure provided by Anonuk was the fix.  I now just need to make it happen at boot.  Thanks for the tip.

--------------------
SL-6000L
SL-C760, Cacko 1.21b

jerrybme

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Screen Ghosting
« Reply #4 on: November 18, 2004, 08:50:41 pm »
You may want to try adjusting the setting as discussed here
Cheers,
Jerry
SL-C3100
Angstrom-GPE
Lexar SD 1 GB
PQI 2GB CF
Ambicom WL1100 CF

DaveAnderson

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Screen Ghosting
« Reply #5 on: November 19, 2004, 06:38:36 pm »
Quote
You may want to try adjusting the setting as discussed here
Cheers,
Jerry
This doesn't apply to Cacko.  And actually, it didn't fix the jittering problem for me (in pdaXrom).

Laze

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Screen Ghosting
« Reply #6 on: November 20, 2004, 04:34:05 am »
The thread mentioned above applys to all Zaurus "ROMs" - it basic hardware changes - anyone with shadows/ghosting/flickering should try the D+M menu settings first - after trying 3-4 times i got my settings just perfect - this also works when running Cacko - in particalur its the C860 series thats affected the most.
C760 running pdaXrom lastest ;-)
SL5500 Running Cacko Qtopia
512 MB SD Card, 128 MB CF Card, Prism2 CF Wlan.

Always visit http://www.pdaXrom.org for latest news.