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08-09-2014 02:09 AM
08-09-2014 02:09 AM
wifi (and brightness) issues with EliteBook 755 on Ubuntu 14.04 LTS
Hi,
I have a EliteBook 755 (J0X38AW#ABD) which I want to use with Ubuntu 14.04 LTS.
The brightness control and wifi do not work out of the box.
To get it the brightness control working, I had to change the acpi_osi kernel parameter in /etc/default/grub:
GRUB_CMDLINE_LINUX="acpi_osi='!Windows 2013' acpi_osi='!Windows 2012'"
With the wifi I did not have any success. The wifi network controller is a
"Broadcom Corporation BCM43228 802.11a/b/g/n [14e4:4359]", which is supposed to play well with Ubuntu.
I filed a bug but maybe someone knows how to get wifi under Ubuntu 14.04 working on this device.
Best,
Marc
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08-13-2014 11:39 AM - edited 08-13-2014 11:57 AM
08-13-2014 11:39 AM - edited 08-13-2014 11:57 AM
Re: wifi (and brightness) issues with EliteBook 755 on Ubuntu 14.04 LTS
After trying myriads of combinations of kernel parameters I ended up with the following working setup:
Switch off virtualization in BIOS and use the following kernel parameters: "acpi_osi=!Windows 2013" "acpi_osi=!Windows 2012" intremap=off
For a permanent change find the following line in /etc/default/grub:
GRUB_CMDLINE_LINUX=""
and replace it with the following line:
GRUB_CMDLINE_LINUX="acpi_osi='!Windows 2013' acpi_osi='!Windows 2012' intremap=off"
save the file and run:
sudo update-grub
Brightness control and wifi should now work :)
Suggested options on launchpad: https://bugs.launchpad.net/ubuntu/+source/broadcom-sta/+bug/1356526