Lenovo success except no wireless

[Xen]

Colin Law schreef op 10-06-2017 9:21:
> On 10 June 2017 at 04:33, Phil <phil_lor at bigpond.com> wrote:
>> On Sat, 10 Jun 2017 12:40:37 +1000
>> Karl Auer <kauer at biplane.com.au> wrote:
>> 
>> Thank you to all who replied.
>> 
>>>    sudo rfkill unblock all
>> 
>> Did nothing.
>> 
>> lspci showed that I have an Ethernet card but no mention a network 
>> card.
>> 
>> The network switch on the side of the laptop is turned on. The 
>> Bluetooth led is lit but not the wireless led. No Bluetooth device is 
>> found.
>> 
>> On top of that, the dreaded 1802 error has returned after a reboot. 
>> Again, I cannot log into my laptop.
> 
> It is definitely a hardware problem. It might be worth taking the
> panels off and removing and replacing every connector you can see, and
> taking out and replacing the RAM chips. If it is ok when cold but
> starts failing after it has been on for a while then it may be
> overheating. Vacuum out what you can from inside and from the vents.
> If you have a compressed air can then even better. Take the battery
> out before you start, though you may well have to do that to get the
> case open anyway.
> 
> Colin

I have had a laptop wherein booting Ubuntu at one point managed to fuck 
up the wireless so badly that I needed to boot Windows or vice versa to 
get it right again.

There is apparently something persistent in these chips that needs to be 
set by a driver, but the Linux driver may not do it.

At one point I believe I lost wifi in Windows unless I booted Linux 
(again). Without having booted Linux in the first place this would never 
have happened.

The wireless controller was the Intel WiFi Link 5100.

Regards.