Suspend/Resume on Lenovo IdeaPad S400 with FreeBSD 10?

[Jan Kokemüller]

> After some experimenting, I found this patch, which solved the problem
> completely:
> http://lists.freebsd.org/pipermail/freebsd-x11/2013-October/013727.html
>
> Now, I have this in X log after resume:
> [  4561.749] (WW) intel(0): retrying batchbuffer submit
> [  4561.803] (WW) intel(0): retrying batchbuffer submit
> [  4561.857] (WW) intel(0): retrying batchbuffer submit
> [  4561.908] (WW) intel(0): retrying batchbuffer submit
> [  4561.959] (WW) intel(0): retrying batchbuffer submit
> [  4562.012] (WW) intel(0): retrying batchbuffer submit
> [  4562.063] (WW) intel(0): retrying batchbuffer submit
> [  4562.117] (WW) intel(0): retrying batchbuffer submit
> [  4562.171] (WW) intel(0): retrying batchbuffer submit
> [  4562.225] (WW) intel(0): retrying batchbuffer submit
> [  4562.279] (WW) intel(0): retrying batchbuffer submit
> [  4562.333] (WW) intel(0): retrying batchbuffer submit
> [  4562.386] (WW) intel(0): retrying batchbuffer submit
> [  4562.439] (WW) intel(0): retrying batchbuffer submit
> [  4562.493] (WW) intel(0): retrying batchbuffer submit
> [  4562.547] (WW) intel(0): retrying batchbuffer submit
> [  4564.779] (II) AIGLX: Suspending AIGLX clients for VT switch
> [  4564.779] (WW) intel(0): drmDropMaster failed: Unknown error: -22
> [  4565.994] (II) AIGLX: Resuming AIGLX clients after VT switch
> [  4566.096] (II) intel(0): EDID vendor "CMN", prod id 5239
> [  4566.096] (II) intel(0): Printing DDC gathered Modelines:
> [  4566.096] (II) intel(0): Modeline "1366x768"x0.0   71.59  1366 1410
> 1439 1512  768 771 775 789 -hsync -vsync (47.3 kHz eP)
>
> but everything is alive: compiz restarts correctly, GL applications
> work as they did before resume. Job done!
>
> A question: is this patch ok? Nothing wrong with it? Do you or anybody
> else experienced a similar problem and found a different solution?

I think I found a less hackish workaround for this problem. I've put 
"pkill -STOP X" into /etc/rc.suspend and "pkill -CONT X" into 
/etc/rc.resume. This seems to work fine so far with an unmodified 
xf86-video-intel driver on my SL510.