Messages in this thread | | | Date | Sat, 31 Mar 2001 02:15:14 +0200 | From | Jamie Lokier <> | Subject | Recent problems with APM and XFree86-4.0.1 |
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Benjamin Herrenschmidt wrote: > There is a problem with the power management code for console.c > > The current code calls do_blank_screen(0); on PM_SUSPEND, and > unblank_screen() on PM_RESUME. > > The problem happens when X is the current display while putting the > machine to sleep. The do_blank_screen(0) code will do nothing as > the console is not in KD_TEXT mode. > However, unblank_screen has no such protection. That means that > on wakeup, the cursor timer & console blank timers will be re-enabled > while X is frontmost, causing the blinking cursor to be displayed on > top of X, and other possible issues.
On that theme of power management with X problems, I have been having trouble with my laptop crashing when the lid is closed, instead of suspending as it used to. The laptop is a Toshiba Satellite 4070CDT.
The problem appeared around the time I updated the XFree86-4 package to Red Hat 7's latest update, but I also updated to kernel 2.4.2 around the same time so I'm not sure of the cause.
Until recently, closing the lid caused the machine to beep three times, sync data to disk and suspend, then opening the lid resumed. This worked with or without X displaying.
Now if I switch to a text console and then suspend, it is fine.
If I have X displaying, closing the lid causes the machine to beep... and beep and beep. About half the time it does suspend after many more beeps than usual (e.g. 10 seconds pass before deciding to sync to disk), and in that case it usually resumes ok but sometimes it resumes and the machine is not responding to keyboard input. When this happens, a hard reboot is required. (SysRq doesn't work).
The other half of the time it just beeps repeatedly forever. Mouse input doesn't work, nor does keyboard. Curiously, SysRq-S-U-B still syncs and reboots the machine with a clean disk from this state.
These effects might have something to do with APM in current kernels and/or XFree86-4.0.1-1 from Red Hat 7 updates. Has anyone observed similar recent problems?
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