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jstitch

Member

From: Mexico city

Registered: 2012-04-16

Posts: 8

[SOLVED] No wifi on my Broadcom b43 wifi card after Linux update

After last update, I ended up with no wifi on my Dell Latitude E4300 Laptop.
Wifi card uses a broadcom b43 , that I've always managed to configure using b43-fwcutter core pakage and b43-firmaware on the AUR.

But now, when I startup I find this:

[ 18.166631] b43-phy0: Broadcom 4312 WLAN found (core revision 15)
[ 18.204697] b43-phy0: Found PHY: Analog 6, Type 5 (LP), Revision 1
[ 18.204712] b43-phy0: Found Radio: Manuf 0x17F, ID 0x2062, Revision 2, Version 0

Apparently the card is detected.

And then further below:

[ 35.646954] DMAR: DRHD: handling fault status reg 2
[ 35.646967] b43-phy0 ERROR: Fatal DMA error: 0x00000800, 0x00000000, 0x00000000, 0x00000000, 0x00000000, 0x00000000
[ 35.646969] b43-phy0 ERROR: This device does not support DMA on your system. It will now be switched to PIO.
[ 35.646970] b43-phy0: Controller RESET (DMA error) ...
[ 35.650283] DMAR: [DMA Read] Request device [0c:00.0] fault addr fffe9000 [fault reason 06] PTE Read access is not set
[ 35.883580] b43-phy0: Loading firmware version 784.2 (2012-08-15 21:35:19)
[ 42.917129] b43-phy0 warning: Forced PIO by use_pio module parameter. This should not be needed and will result in lower performance.
[ 42.957655] b43-phy0: Controller restarted

Can you please help me on solving this issue? Has the last update on the linux kernel may have done some bad things here? I may use the pacman cache to restore to a previous version but I reckon that's not an optimal solution.

Last edited by jstitch (2017-09-29 21:32:34)

V1del

Forum Moderator

Registered: 2012-10-16

Posts: 21,657

Re: [SOLVED] No wifi on my Broadcom b43 wifi card after Linux update

https://bbs.archlinux.org/viewtopic.php?id=230362

jstitch

Member

From: Mexico city

Registered: 2012-04-16

Posts: 8

Re: [SOLVED] No wifi on my Broadcom b43 wifi card after Linux update

https://bbs.archlinux.org/viewtopic.php?id=230362

Thanks man! it worked :-)