Re: iwm(4) broken on latest -current kernel

[mlelstv%serpens.de@localhost (Michael van Elst)]

ktnb%posteo.net@localhost (Kevin Bloom) writes:

>(Michael van Elst) <mlelstv%serpens.de@localhost> wrote:
>> Can you please provide the type of your iwm device. E.g. output
>> from dmesg like:

>Sure thing:

>[     1.040837] iwm0 at pci2 dev 0 function 0: Intel Dual Band Wireless AC 8260 (rev. 0x3a)
>[     1.040837] iwm0: interrupting at msi2 vec 0
>[     6.265043] iwm0: hw rev 0x200, fw ver 22.361476.0, address xx:xx:xx:xx:xx:xx


This gets "interesting". A similar device was already tested successfully,
but there are at least two versions of AC 8260 that might behave differently.

One test would be to use a more recent firmware for it. You should already
have (in /libdata/firmware/if_iwm/):

SHA1 (iwlwifi-8000C-22.ucode) = 7ff722a5d1f968c20a6592c13f5a64d35e7da178
SHA1 (iwlwifi-8000C-36.ucode) = a6a01d48822dac433f8fcddf0eaa43fb9c45314f

and the driver selects the older version as the newer failed for us, probably
because it requires more features in the driver.

So one test would be to build a kernel that selects the newer firmware.

The driver source contains:

#if 0
/* 8000C-36 */
                sc->sc_fwname = "iwlwifi-8000C-36.ucode";
#else 
/* 8000C-22 */
                sc->sc_fwname = "iwlwifi-8000C-22.ucode";
#endif

and by changing '#if 0' to 'if 1' it will select the new firmware.


Another difference of course could be your environment. Do you use
a simple WPA2 net with pre-shared key or something more complex ?