IBM T42 freezes when going to sleep under X11
hartzell at kestrel.alerce.com
Fri Dec 2 20:53:01 GMT 2005
Jacques Garrigue writes:
> From: Jacques Garrigue <garrigue at math.nagoya-u.ac.jp>
> > I've got a strange problem with my IBM T42 / Radeon M10 setup.
> > When using the 6.0-RELEASE kernel (including GENERIC), I cannot go to
> > sleep when X11 is running: the machine freezes, display still on. I
> > tried disabling DRI, but this does not seem to be the problem: I have
> > no DRM anyway.
> > On the other hand, everything works fines with a 6.0-RC1 kernel.
> > Was there a big change in between, such that I need to change my
> > configuration?
> I finally found the cause of my problems: there has been changes in
> the em driver (Gb ethernet), such that the machine freezes when trying
> to switch automatically from the X11 VT to the system console, before
> going to sleep. The interaction is surprising, but clearly the problem
> disappears when I remove "device em" from the kernel configuration,
> and it reappears when I do "kldload if_em". Since I'm using only ath
> (wireless) anyway, this is fine with me...
> A previous partial solution suggested to me was to add
> to sysctl.conf, but this means the screen gets garbled and I have to
> do the switch by hand anyway, which is a real pain.
> Worse still: the machine would still freeze when going to sleep while
> the disk is active.
> The last step is to track down the bug in em, as it still seems to
> be there in yesterday's STABLE.
I don't seem to have any problem with my T42p using a kernel compiled
on 11/29 11:21
My copy of if_em.c is:
/*$FreeBSD: src/sys/dev/em/if_em.c,v 18.104.22.168 2005/11/25 14:11:59 glebius Exp $*/
More information about the freebsd-mobile