On Monday, 10 of December 2007, Andrew Morton wrote:
> On Sun, 09 Dec 2007 13:40:07 +0100 Tomas Carnecky <[EMAIL PROTECTED]> wrote:
>
> > Andrew Morton wrote:
> > > 2.6.24-rc4 on a Lenovo t61p, using FC8 config.
> > >
> > > echo mem > /sys/power/state while running X.
> > >
> > > It appears to suspend OK but then it instantly resumes and runs
> > > OK except the display is blank.
> >
> > http://bugzilla.kernel.org/show_bug.cgi?id=9258
> >
> > I have a X61 tablet, and the screen is blank after resume, too, but
> > pressing ctrl+alt+F1/F7 usually fixes it. It seems a problem with the X
> > video driver. I'm not sure though.
> >
>
> This machine doesn't bring the display back after resume-from-RAM under
> 2.6.23 either.
>
> The post-2.6.23 regresison here is that the suspend itself fails. Under
> 2.6.23 the machine suspends and requires a keystrike to start resuming.
> Under 2.6.24-rc4 it just instantly resumes all by itself.
Please see if the appended patch helps (it will probably break the RTC wakeup
again, but well ...).
---
kernel/power/disk.c | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)
Index: linux-2.6/kernel/power/disk.c
===================================================================
--- linux-2.6.orig/kernel/power/disk.c
+++ linux-2.6/kernel/power/disk.c
@@ -378,9 +378,12 @@ int hibernation_platform_enter(void)
return error;
suspend_console();
- error = device_suspend(PMSG_SUSPEND);
- if (error)
- goto Resume_console;
+ /*
+ * FIXME: device_suspend(PMSG_SUSPEND) should be called here, but
+ * some EHCI controllers make boxes reboot instead of going into the
+ * S4 sleep state in that case.
+ */
+ device_shutdown();
error = hibernation_ops->prepare();
if (error)
-
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