[coreboot] X220 Wifi Suspend

Tyler Cipriani tyler at tylercipriani.com
Fri Nov 18 23:15:41 CET 2016

On 16-11-18 20:52:41, Nico Huber wrote:
>On 18.11.2016 18:08, Tyler Cipriani wrote:
>> I recently flashed my Lenovo ThinkPad X220 with Coreboot and a SeaBIOS
>> payload. I made an attempt to document the whole process[0].
>> Initially, everything seemed to work fine. I was able to boot to SeaBIOS
>> which handed off to a Debian testing install (Stretch).
>> Now that I've used this laptop a bit, I realized that wifi appears
>> hardware-blocked after returning from suspend. I've found lots of pages
>> online with "one weird trick" to fix this, and have tried many of those
>> tricks to no avail :(
>> I've tried a couple of different Coreboot configs[1][2] neither of which
>> made any difference. After re-flashing the old proprietary ThinkPad BIOS
>> wifi comes back from suspend just fine.
>> I've tried both the standard intel wifi card and a card from
>> ThinkPenguin that uses the ath9k driver[3] using the coreboot config.
>> Any help or pointers anyone could give me would be much appreciated!
>it's likely caused by a regression we had lately, caused by [4] and now
>fixed by reverting it [5]. Feel free to try again with latest coreboot.

Works perfectly now -- thank you for the pointer!

-- Tyler

>Hope that helps,
>[4] commit 83df672d2ce481686c5c4e04625bc1b97d7a4a8b
>    ec/lenovo/h8: don't load configuration when booting from s3
>[5] commit 6444b52ce06236c621a88003b2fca107feaf9bff
>    Revert "ec/lenovo/h8: don't load configuration when booting from s3"
>> -- Tyler
>> [0].
>> <https://tylercipriani.com/blog/2016/11/13/coreboot-on-the-thinkpad-x220-with-a-raspberry-pi/>
>> [1]. <http://pastebin.com/Ah0fxBp5>
>> [2]. <http://pastebin.com/1yNSTfyj>
>> [3].
>> <https://www.thinkpenguin.com/gnu-linux/penguin-wireless-n-half-height-mini-pcie-card>
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