On Sat, Aug 15, 2020 at 09:14:48AM +0100, Julian Smith wrote:
> I'm seeing fairly frequent (e.g. more than daily) failures from an iwn0
> wireless network device, on a Lenovo X230.
>
> dmesg|grep iwn shows:
>
> iwn0 at pci2 dev 0 function 0 "Intel Centrino Advanced-N 6205" rev 0x34: msi,
> MIMO 2T2R, MoW, address a4:4e:31:43:f1:60
> iwn0: fatal firmware error
> iwn0: fatal firmware error
> iwn0: fatal firmware error
> iwn0: fatal firmware error
> iwn0: fatal firmware error
> iwn0: fatal firmware error
> iwn0: fatal firmware error
> iwn0: device timeout
> iwn0: device timeout
> iwn0: fatal firmware error
> iwn0: fatal firmware error
> iwn0: fatal firmware error
> iwn0: fatal firmware error
> iwn0: fatal firmware error
> iwn0: fatal firmware error
> iwn0: fatal firmware error
> iwn0: device timeout
> iwn0: fatal firmware error
> iwn0: fatal firmware error
>
> Uptime is 6 days, so this is several failures per day on average.
>
> iwn(4) DIAGNOSTICS says that these two types of error 'should not
> happen'.
>
> Is here anything i can do about this? The machine is a Lenovo X230.
>
> Or is there alternative wireless hardware that i install instead that
> is known to be reliable?
>
> Full dmesg is below. My kernel has a patch from visa@ to reduce gdb
> uninterruptible wait problem (see 'gdb in uninterruptible wait' thread
> on misc), but is otherwise vanilla 6.7.
Could you try -current to see if the issue is still present there?
On 6.7, does forcing 11a or 11g mode work around this? For example:
ifconfig iwn0 mode 11g
