Re: dire state of rtl driver in 3.7

From: Mike Galbraith
Date: Sun Dec 23 2012 - 01:02:52 EST

On Sun, 2012-12-23 at 00:09 +0900, Norbert Preining wrote:

> Network card is built in into a Lenovo Thinkpad Edge

Toshiba Satellite.
> # lspci -nnv -s 03:00.0
> 03:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. RTL8191SEvB
> Wireless LAN Controller [10ec:8172] (rev 10)
> Subsystem: Realtek Semiconductor Co., Ltd. Device [10ec:e020]

[10ec:8181] here.

> Effects:
> - either does not associate at all with the AP
> - or the kernel believes it is associated and packages ping to the router
> get stuck for up to 50+ seconds!!!
> - the kernel believes everything is fine but actually nothing gets out
> (Destination unreachable)
> - wild ping time up-down:
> 64 bytes from icmp_req=73 ttl=255 time=3.05 ms
> 64 bytes from icmp_req=74 ttl=255 time=6.42 ms
> 64 bytes from icmp_req=75 ttl=255 time=1.21 ms
> 64 bytes from icmp_req=76 ttl=255 time=6808 ms
> 64 bytes from icmp_req=77 ttl=255 time=5800 ms
> 64 bytes from icmp_req=78 ttl=255 time=4792 ms


Looks a lot like my driver experience with older kernels, I had to use
the external driver in the rare event that I needed wireless to work.
The in tree driver works peachy these days (needed it recently, was
pleasantly surprised when it _just worked_, not even a hiccup), so
somebody cared, gave at least the 10ec:8181 bits some serious love.


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