[linux-dvb] mt352 no more working after suspend to disk

Alex Betis alex.betis at gmail.com
Tue Feb 10 13:39:09 CET 2009

I've tried to configure my system for suspends and here are my conclusions,
maybe it will be helpful:

Make sure no applications are using drivers that generally make problems
after suspend, that means you have to stop/kill them before suspending. I
use pm-utils script to stop application before suspend and start
applications after that.
Make sure you reload the drivers after resume. pm-utils has a feature to
unload modules before suspend and reload them after resume automatically,
check the SUSPEND_MODULES configuration. That method works fine for my DVB-S
drivers, but don't work for my WiFi card, so I had to reload the driver
after resume in my script.

Hope it helps.

On Tue, Feb 10, 2009 at 12:16 AM, hermann pitton <hermann-pitton at arcor.de>wrote:

> Hi Nico,
> Am Montag, den 09.02.2009, 12:33 +0100 schrieb Nico Sabbi:
> > Hi,
> > if I suspend to disk and next resume I have to manually remove and
> > reload my mt352 driver, otherwise it complains of a lot of i2c
> > errors.
> >
> > My kernel is suse's 2.6.27.
> >
> > Is this problem fixed in recent kernels or in hg?
> >
> > Thanks,
> >       Nico
> >
> don't know on what driver you report it, but since I know you also have
> saa7134 driver devices, nobody claimed so far that dvb is suspend/resume
> safe.
> I recently reported that people have to stay aware after resume, that
> even without using any dvb app actually during suspend, analog needs to
> be re-initialized first after that to get the tda10046 in a proper state
> for DVB-T again, at least on hybrid devices. Unshared DVB-S tuners and
> demods do stand this already. (medion 8800quad, CTX948, Asus 3in1)
> You can suspend to RAM on analog for example with a running tvtime and
> resume, but dma sound on saa7134-alsa is also not handled yet. Analog
> sound works.
> That is the status as far I have it.
> Cheers,
> Hermann
> _______________________________________________
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> For V4L/DVB development, please use instead linux-media at vger.kernel.org
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