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Old 06-16-2008, 09:45 AM   #1
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Registered: May 2008
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Sony Vaio VGN-TZ195N Debian\Lenny 2.6.24 Kernel Suspend/ Resume Backlight Issues

Laptop: Sony Vaio VGN-TZ195N
Dist: Debian\Lenny
Kernel: 2.6.24

Suspend works fine, however when I resume the backlight does not work. I can see a faint image on the screen, and with enough external light I am able to launch a console window and type xset dpms force on, with no luck any suggestions?
Old 07-04-2008, 11:58 PM   #2
Registered: Mar 2007
Location: America
Distribution: Linux
Posts: 161

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Thumbs down temporary fix

echo 7 > /sys/class/backlight/sony/brightness
Console terminal (ALT + F7) and type the above.

I can confirm this is a problem with my VAIO VGN-N220E runing Slackware 12.1 .

Ubuntu 8.04 No Problems
Mandriva Spring No Problems

Word to the wise Slack / Debian are not laptop friendly.


backlight, debian, sony, suspend, vaio

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