Hi,

On Sat, 25 Jun 2005, Laz wrote:

What are the usb-driver-quirks that you mention? Are they usb DVB devices that you have?

Yes, I unload the DVB drivers before suspending and reload them after resuming. Because of the firmware load of the DVB-USB-devices (after firmware load they do a soft-reboot and appear as a "new" device) I had to add a small delay of 3 seconds, that's what I meant by quirk.

I've just been having another go at getting software suspend to work on an Epia-based vdr system with vdr-xine. I can get it to suspend and resume fairly easily with a 2.6.12 kernel and the latest patch set form www.suspend2.net but I can't get the DVB drivers to play nicely!

A suspend and restart brings it back up as it should and vdr starts but all I see is a black screen. I can change channel but I still get a black screen. I have yet to see if the DVB card (an old l64781 based Nova-T) is outputting a stream or not, and LIRC won't allow any connections after resuming (homebrew receiver). I have yet to try playing back a recording because it's a bit awkward without a remote!

Has anyone had any luck with software suspend and this type of card or LIRC?

Hmm I would simply stop and start the drivers/services which don't survive the hibernation.

Do I need to explicitly kill vdr and unload the drivers before suspending, and then reload and restart on startup?

Have a look in /etc/hibernate/hibernate.conf - there are scriptlets-hooks which can be of help.

regards, Patrick.

-- Mail: patrick.boettcher@desy.de WWW: http://www.wi-bw.tfh-wildau.de/~pboettch/

On Sun, 26 Jun 2005, Roland Behme wrote:

Hi Patrick,

...

Yes, I unload the DVB drivers before suspending and reload them after resuming. Because of the firmware load of the DVB-USB-devices (after firmware load they do a soft-reboot and appear as a "new" device) I had to add a small delay of 3 seconds, that's what I meant by quirk.

Thanks for sharing your experience. That's very interesting because I'm trying to improve the boot-time of my VDR for some months.

Would a hibernated PC wake up by Wake-on-LAN or Wake-on-Ring?

If you have it enabled in your bios, yes.

Software Suspend2 is software based. It can but it does not need ACPI-sleep-modes from the bios. It dumps the memory to the harddisk and does a normal power-off.

When you boot the machine it loads the kernel normally and then it restores the memory from the harddisk.

I'm using the filewriter, so I don't need to repair the swap-space afterwards.

You just have to take care about incompatible modules (DVB) and services (VDR, because it depends on DVB). The hibernate-script (which I would highly recommend to manage software-suspend) is a very good help to work around quirks.

Patrick.

-- Mail: patrick.boettcher@desy.de WWW: http://www.wi-bw.tfh-wildau.de/~pboettch/