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Re: Bug#794468: general: no watchdog support in installer kernel



Control: reassign -1 src:linux
Control: tag -1 moreinfo

On Mon, 2015-08-03 at 14:17 +0200, Cyril Brulebois wrote:
> Control: reassign -1 src:debian-installer
> 
> Hi,
> 
> Dominik George <nik@naturalnet.de> (2015-08-03):
> > The Debian installer images for jessie apparently do not have watchdog
> > support enabled in the kernel, so they do not send heartbeats to the
> > BIOS.
> > 
> > This results in the installer system aborting and the machine resetting
> > after five minutes, or whatever the BIOS sees as watchdog timeout.
> > 
> > Disabling watchdog support during installation is obviously a simple
> > workaround, but it could still be enabled as to my knowledge, it does
> > not make the kernel significantly better.

Which watchdog device is this, that is enabled by the BIOS?  Normally I
expect them to be enabled only by the kernel driver.

> Reassigning to debian-installer, which is likely to be a way better
> place to start than general.
> 
> It might just be a matter of setting the right option (HEARTBEAT, as a
> wild guess) on the kernel side though, so I'm copying the kernel
> maintainers. They're welcome to steal the bug from src:debian-installer
> if they feel it's appropriate.

The HEARTBEAT option is for an LED indicating CPU load.  Nothing to do
with watchdogs.

> Looking at svn or at installed kernels, I don't see this option set
> anywhere but sh4 and m68k though, so I'm not sure the installed system
> would be different than the installer one…

We enable many watchdog drivers, but generally they aren't needed at
install time since the watchdog devices are not enabled by the system
firmware.

Ben.

-- 
Ben Hutchings
Unix is many things to many people,
but it's never been everything to anybody.

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