Arch Linux

zeitgeist.at

Member

Registered: 2010-03-07

Posts: 19

WLAN device missing after upgrade from linux 4.0.1-1 -> 4.0.2-1

Hi,

after the upgrade from linux-4.0.1.-1 -> 4.0.2-1 my wlan device went missing, i'm using the bcm5974 driver on a MacBookAir4,2. After downgrading it worked as usual.

Posting this because i'm curious why this happened and as a workaround if someone has the same problem.

Trilby

Inspector Parrot

Registered: 2011-11-29

Posts: 30,459

Website

Re: WLAN device missing after upgrade from linux 4.0.1-1 -> 4.0.2-1

Please provide more information: bcm5974 is not a driver, it sounds like a chip ID - though it's not one I can find in any of the lists of supported chips.

What is the output of `lspi -vnn | grep 1434`?  Did you have to use an AUR package for the driver?  Did you reboot after the kernel upgrade?

EDIT: I take it this must be a chip ID as there is a kernel driver called bcm5874 but this is not for wireless, but for multitouch trackpads.  Or did you just see bcm5874 in the lsmod output and figure it was for wireless?

Last edited by Trilby (2015-05-18 13:25:29)

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"UNIX is simple and coherent" - Dennis Ritchie; "GNU's Not Unix" - Richard Stallman

zeitgeist.at

Member

Registered: 2010-03-07

Posts: 19

Re: WLAN device missing after upgrade from linux 4.0.1-1 -> 4.0.2-1

Sorry my bad - i have the broadcom-wl driver

Network controller [0280]: Broadcom Corporation BCM43224 802.11a/b/g/n [14e4:4353] (rev 01)
    Subsystem: Apple Inc. AirPort Extreme [106b:00e9]
    Flags: bus master, fast devsel, latency 0, IRQ 17
    Memory at a0400000 (64-bit, non-prefetchable) [size=16K]
    Capabilities: <access denied>
    Kernel driver in use: wl
    Kernel modules: bcma, wl

i didn't immediately reboot. i updated yesterday and rebooted today and then it didn't work anymore.

Trilby

Inspector Parrot

Registered: 2011-11-29

Posts: 30,459

Website

Re: WLAN device missing after upgrade from linux 4.0.1-1 -> 4.0.2-1

And which package do you use for wl?  I'm assuming it's not one of the DKMS varieties, and if this is so, it needs to be rebuilt with kernel upgrades.

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"UNIX is simple and coherent" - Dennis Ritchie; "GNU's Not Unix" - Richard Stallman