Mailinglist Archive: opensuse-kernel (22 mails)

[Dave Plater <dave.plater@xxxxxxxxxxx>]

Greg KH wrote:
> On Wed, Jul 23, 2008 at 09:54:11AM +0200, Dave Plater wrote:
> > Hi, I have an intermittent r8169 driver problem, can anyone help me with a 
> > breakpoint when the revision number is written as 0xff instead of 0x02. The 
> > only difference, when the driver doesn't work is the revision number given 
> > in hwinfo --netcard.
>
> So reading the pci config registers is different at different times?
>
> Perhaps the difference is between warm and cold booting?  Running a
> different OS before warm booting Linux?
>
> Linux should not be changing the version number of the pci device here.
>
> thanks,
>
> greg k-h

With the driver compiled into the kernel, the problem is rare and has only occurred at cold boot. With a new kernel and 
still loaded as a module it is totally random, sometimes a reboot will load driver properly and sometimes not. Disabling 
the nic in bios and rebooting, then rebooting with it enabled mostly caused the driver to work but not always. I assume 
linux reads the version number from the device and sometimes fails and reads garbage. I would like to know if this is a 
hardware problem or a kernel bug. I have noticed other r8169 problems on the opensuse list and I will try booting with 
nomsi, as suggested by someone else, next kernel update which would confirm a bug.
Regards
Dave P

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