> From: Dax Kelson <[EMAIL PROTECTED]> > Sender: [EMAIL PROTECTED] > Date: Sun, 10 Nov 2002 00:57:25 -0700 (MST) > > XF86 Ver: Tested with 4.2.0-72 (RH8.0) and CVS (Nov8th), same result > > Hardware: > - Dell Inspiron 4150 Laptop w/ A03 BIOS > - i845 chipset > - ATI Radeon Mobility M7 LW rev 0 > > Problem PreReq: Only manifests when laptop is running on battery power. > > Problem: When X is running and the keyboard/mouse isn't touched for about > 5mins, the screen blanks. Pressing a key or moving the mouse causes to > 'unblank', however, the screen is a dancing, scrambled, unreadable mess. > Switching out to 'text mode' via CTL-ALT-F1 doesn't help, it is still > scrambled. Note that the OS is not locked up; I can still SSH in. > Rebooting the box is the only way to get the screen back to normal, just > restarting X has no effect. Checking dmesg and the XFree86.0.log file > shows no error messages, or any extra messages for that matter.
This is a common problem with Radeon Mobility cards and 1400x1050 displays. I have seen some comments that indicate that something is being worked on, but I am not sure of its status. You can get the box to re-sync without a re-boot. Here is what I do on my IBM T30: 1. Switch to a text screen <CTRL-ALT-F2> 2. Turn off the display <Fn-F3> does this on my T30. You may need to close the top or use some other key sequence to turn it off. 3. Turn the display back on. (Usually any key. I use <SHIFT>.) 4. Return to X display <ALT-F9>. It seems that the display will re-sync if powered on while in text mode, but not in graphic mode. The text mode displays at 720x400 and this does not seem to cause the problem that shows up at 1400x1050. I suspect that this is REALLY a BIOS issue, but there must be some way to work around it as Windows does not have the problem. It seems independent of brand, though, so it really requires some special tweak beyond what other graphics cards require. R. Kevin Oberman, Network Engineer Energy Sciences Network (ESnet) Ernest O. Lawrence Berkeley National Laboratory (Berkeley Lab) E-mail: [EMAIL PROTECTED] Phone: +1 510 486-8634 _______________________________________________ Xpert mailing list [EMAIL PROTECTED] http://XFree86.Org/mailman/listinfo/xpert
