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<body class='hmmessage'>I know my laptop didn't crash because I'm able to put it into suspend mode. Thanks for the tip; I'll try it out.<br><br>I also changed my BIOS and told it to disable power savings when plugged in. Maybe one of the two will help...<br><br><hr id="stopSpelling">> Date: Tue, 9 Sep 2008 06:57:44 -0700<br>> Subject: Re: [CentOS] LCD blanks out overnight<br>> From: centos@linuxpowered.net<br>> To: centos@centos.org<br>> <br>> Joe Tseng wrote:<br>> > I inherited an ancient Dell Latitude C840 and recently installed CentOS 5.2<br>> > on it. It worked fine for the most part, but when I left it overnight and<br>> > came back the next morning, the screen blacked out and wouldn't come back<br>> > unless I did a hard reset. Even though I turned off all the power<br>> > management settings and left it set like a desktop, the next morning after<br>> > that it still blacked out. I thought maybe it'd come back if I switched<br>> > from X to a virtual text console, but that didn't do the trick. Has anyone<br>> > seen this and what do I do to fix it?<br>> <br>> Is the machine still responsive? e.g. does the caps light key work? Or<br>> is it frozen solid?<br>> <br>> I don't know how many laptops it affects but my previous Toshiba laptops<br>> had problems where if the screen went into power save mode about 70% of<br>> the time the only way to get it to turn back on was to either reboot the<br>> box or put it in suspend/sleep/hibernate and wake it up again. Toshiba<br>> said this was a common problem across vendors that used multiple cores<br>> in their laptops. Microsoft released a fix for it for XP about a year<br>> and a half ago(though as the fix was a specialized fix not a generic<br>> fix that was pushed out to users I didn't realize it until after I<br>> switched off of XP and onto Ubuntu, took a while until a version<br>> of Ubuntu came out that could suspend/resume on that system). I could<br>> not find any related fix for X11, so I just disabled screen blanking<br>> in the X server.<br>> <br>> It's been a while and I don't have that laptop anymore but what<br>> I believe I did was add<br>> <br>> Options "-DPMS"<br>> <br>> To the monitor section of xorg.conf, see the man page for xorg.conf<br>> for other DPMS related options.<br>> <br>> Of course that just turns off screen blanking/power off, if your<br>> system is crashing, that's another topic..<br><br /><hr />See how Windows connects the people, information, and fun that are part of your life. <a href='http://clk.atdmt.com/MRT/go/msnnkwxp1020093175mrt/direct/01/' target='_new'>See Now</a></body>
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