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[Q] Improved Refresh-Rate on 2.1?

OP jleecong

5th January 2011, 06:14 PM   |  #1  
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Per the Nookie Froyo thread they have a suggestion to increase the refresh rate to 68000 to stop/reduce flicker.

I noticed a similar flicker on "stock" 2.1 and checked /sys/devices/omapdss/display0/timings only to find out it is also set at 48000. I increased it to 68000, but it is reset after each reboot.

What is the proper refresh rate? Anyone else notice a flicker on the stock ROM?
5th January 2011, 10:25 PM   |  #2  
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Quote:
Originally Posted by jleecong

Per the Nookie Froyo thread they have a suggestion to increase the refresh rate to 68000 to stop/reduce flicker.

I noticed a similar flicker on "stock" 2.1 and checked /sys/devices/omapdss/display0/timings only to find out it is also set at 48000. I increased it to 68000, but it is reset after each reboot.

What is the proper refresh rate? Anyone else notice a flicker on the stock ROM?

what process did you use to modify the file?
5th January 2011, 10:56 PM   |  #3  
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Quote:
Originally Posted by paleh0rse

what process did you use to modify the file?

I used the following from the thread I linked.
Code:
adb shell echo 68000,1024/70/200/40,600/10/11/10 > /sys/devices/omapdss/display0/timings
5th January 2011, 10:59 PM   |  #4  
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Quote:
Originally Posted by jleecong

I used the following from the thread I linked.

Code:
adb shell echo 68000,1024/70/200/40,600/10/11/10 > /sys/devices/omapdss/display0/timings

Did you su and mount as r/w first?
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5th January 2011, 11:04 PM   |  #5  
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Quote:
Originally Posted by paleh0rse

Did you su and mount as r/w first?

You don't remount /sys
5th January 2011, 11:23 PM   |  #6  
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so does anyone know how to make this stick after boot?
6th January 2011, 01:23 AM   |  #7  
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Quote:
Originally Posted by dennisi01

so does anyone know how to make this stick after boot?

See the thread I just made: http://forum.xda-developers.com/showthread.php?t=901791
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6th January 2011, 02:11 AM   |  #8  
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Quote:
Originally Posted by jleecong

I used the following from the thread I linked.

Code:
adb shell echo 68000,1024/70/200/40,600/10/11/10 > /sys/devices/omapdss/display0/timings

Quote:

Originally Posted by dennisi01
so does anyone know how to make this stick after boot?
See the thread I just made: http://forum.xda-developers.com/showthread.php?t=901791


Thank you both. Seems to work. Now I know how to run my own scripts afterboot.
6th January 2011, 07:37 AM   |  #9  
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Does that mean we add the
Quote:

adb shell echo 68000,1024/70/200/40,600/10/11/10 > /sys/devices/omapdss/display0/timings

at the end of the clrbootcount.sh text to have it run that command to fix the refresh and make it stick?
6th January 2011, 11:24 AM   |  #10  
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I did this (as I posted in the nook flicker thread):

I did a CAT on immediately after, and it had defaulted instead to 66461 instead of 68000 (maximum rate for the chip?)

Of course it also cleared upon reboot. Should I have seen a flicker improvement right away?

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