Re: New laptop: AC 9461/9560: iwm or iwlwifi?

On Mon, Dec 19, 2022 at 09:25:28PM +0000, you (Marco) sent the following to [freebsd-wireless] :
> On Mon, Dec 19, 2022 at 08:56:02PM +0000, you (Marco) sent the following to [freebsd-wireless] :
> > On Sat, Dec 17, 2022 at 10:40:25PM +0000, you (Bjoern A. Zeeb) sent the following to [freebsd-wireless] :
> > > 
> > > Did you try again to switch back to iwlwifi?
> > > 
> > > What happens if you are on a running iwm setup and then do the devctl
> > > detach, set driver dance?
> 
> So on my current running iwm setup without changing anything else I did
> the devtl detach, set driver dance which failed as follows:
> 
> [~] doas pciconf -lBbcevV iwm0
> iwm0@pci0:0:20:3:	class=0x028000 rev=0x11 hdr=0x00 vendor=0x8086 device=0x9df0 subvendor=0x8086 subdevice=0x0030
>     vendor     = 'Intel Corporation'
>     device     = 'Cannon Point-LP CNVi [Wireless-AC]'
>     class      = network
>     bar   [10] = type Memory, range 64, base 0xea238000, size 16384, enabled
>     cap 01[c8] = powerspec 3  supports D0 D3  current D0
>     cap 05[d0] = MSI supports 1 message, 64 bit enabled with 1 message
>     cap 10[40] = PCI-Express 2 root endpoint max data 128(128) FLR RO NS
>                  max read 128
>     cap 11[80] = MSI-X supports 16 messages
>                  Table in map 0x10[0x2000], PBA in map 0x10[0x3000]
>     ecap 0000[100] = unknown 0
>     ecap 0018[14c] = LTR 1
>     ecap 000b[164] = Vendor [1] ID 0010 Rev 0 Length 20
> 
>  [~] kldstat | grep -e wlan -e wi-fi -e wifi -e iwm
>  3    1 0xffffffff82d4c000   290cc0 iwm9000fw.ko
>  6    1 0xffffffff82fe6000     3130 wlan_xauth.ko
>  7    1 0xffffffff82fea000    2e870 if_iwm.ko
> 
>  [~] doas kldload /boot/kernel/if_iwlwifi.ko
>  [~] kldstat | grep -e wlan -e wi-fi -e wifi -e iwm
>  3    1 0xffffffff82d4c000   290cc0 iwm9000fw.ko
>  6    1 0xffffffff82fe6000     3130 wlan_xauth.ko
>  7    1 0xffffffff82fea000    2e870 if_iwm.ko
> 39    1 0xffffffff85565000    880c8 if_iwlwifi.ko
> 
>  [~] doas devctl detach pci0:0:20:3
>  [~] doas pciconf -lBbcevV iwm0
> pciconf: Device not found
> 
>  [~] doas devctl set driver pci0:0:20:3 iwlwifi
> devctl: Failed to set pci0:0:20:3 driver to iwlwifi: Input/output error

Forgot to mention that despite the IO error, pciconf does list
pci0:0:20:3 to be attached to iwlwifi0

[~] d pciconf -lBbcevV iwlwifi0
iwlwifi0@pci0:0:20:3:	class=0x028000 rev=0x11 hdr=0x00 vendor=0x8086 device=0x9df0 subvendor=0x8086 subdevice=0x0030
    vendor     = 'Intel Corporation'
    device     = 'Cannon Point-LP CNVi [Wireless-AC]'
    class      = network
    bar   [10] = type Memory, range 64, base 0xea238000, size 16384, disabled
    cap 01[c8] = powerspec 3  supports D0 D3  current D3
    cap 05[d0] = MSI supports 1 message, 64 bit
    cap 10[40] = PCI-Express 2 root endpoint max data 128(128) FLR RO NS
                 max read 128
    cap 11[80] = MSI-X supports 16 messages
                 Table in map 0x10[0x2000], PBA in map 0x10[0x3000]
    ecap 0000[100] = unknown 0
    ecap 0018[14c] = LTR 1
    ecap 000b[164] = Vendor [1] ID 0010 Rev 0 Length 20

And /var/log/messages contains:

Dec 19 21:17:46 harbinger rtsold[80587]: <rtsock_input_ifannounce> interface wlan0 removed
Dec 19 21:17:46 harbinger wpa_supplicant[51703]: Error reading packet, has device disappeared?
Dec 19 21:17:46 harbinger syslogd: last message repeated 1 times
Dec 19 21:17:46 harbinger kernel: [811025] pid 52018 (wpa_supplicant), jid 0, uid 0: exited on signal 11 (core dumped)
Dec 19 21:17:47 harbinger kernel: [811026] wlan0: link state changed to DOWN
Dec 19 21:17:47 harbinger kernel: [811026] iwm0: detached
Dec 19 21:17:47 harbinger kernel: [811026] pci0:0:20:3: Transition from D0 to D3
Dec 19 21:17:47 harbinger root[77895]: /etc/rc.d/netif: WARNING: wlan0 does not exist.  Skipped.
Dec 19 21:18:05 harbinger kernel: [811044] iwlwifi0: <iwlwifi> mem 0xea238000-0xea23bfff irq 16 at device 20.3 on pci0
Dec 19 21:18:05 harbinger kernel: [811044] iwlwifi0: HW_REV=0xFFFFFFFF, PCI issues?
Dec 19 21:18:05 harbinger kernel: [811044] device_attach: iwlwifi0 attach returned 5

HTH

-- 
Marco van Lienen -- FreeBSD enthusiast
https://keybase.io/scarcry , GnuPG fingerprint: A025 D8AA AC1B D2FC 380D 4FC1 8EA0 0BA8 8580 E6CB
"The Tuck Pendleton machine...zero defects."