Bug 79291

Summary:	RT3090 Wifi (module rt2800pci) has bad reception on Ubuntu 14.04 (regression)
Product:	Drivers	Reporter:	Petr Skocik (pskocik)
Component:	network-wireless	Assignee:	drivers_network-wireless (drivers_network-wireless)
Status:	CLOSED OBSOLETE
Severity:	normal	CC:	linville, stf_xl
Priority:	P1
Hardware:	All
OS:	Linux
Kernel Version:	Linux 3.13.0-24-generic #47-Ubuntu SMP Fri May 2 23:30:00 UTC 2014	Subsystem:
Regression:	No	Bisected commit-id:
Attachments:	dmesg_tail_on_3.16.0-031600rc3-generic.txt

Description Petr Skocik 2014-06-30 17:33:04 UTC

http://askubuntu.com/questions/478018/ralink-rt3090-in-ubuntu-14-04-very-bad-reception-keeps-disconnecting

"
I've upgraded from 12.04 (actually Mint 13) to 14.04 (actually Mint 17) (64bit), and my Wifi reception with my Ralink RT3090 is now very bad. I only get good connectivity if I'm in the same room as my wifi router, whereas previously or in Windows 7 I could connect to the router from a significantly larger distance. Also, the nm-applet now shows only 2 networks tops (the strongest ones), whereas previously I'd get a very long list.

Since the wifi still works well in Windows 7, this shouldn't be a hardware issue.
"

Attached is my `dmesg` output grep'ped with `grep -e ' cfg' -e ' rt'` (those lines seem relevant).

Please let me know if any additional information is needed.

Comment 1 John W. Linville 2014-06-30 17:46:33 UTC

Did you report this to the Ubuntu bug tracker?

Comment 2 Petr Skocik 2014-06-30 18:15:34 UTC

No. Should I? Is here a wrong place to report that bug? I just started that post on askubuntu.com and from the only reply I got there I inferred that it might(?) belong here. I'd just like it fixed, but I don't have the technical skills or the time to look into it myself so I figured making a little noise about it might be the best thing I could do.

Comment 3 John W. Linville 2014-06-30 20:15:06 UTC

Understandable.  But normally when a bug is reported against a distribution kernel, we want the distribution to check things out before we spend a lot of effort working on it upstream.  Not only is the kernel you described several months old, but it might have Ubuntu-specific patches that could be contributing to the problem.

Comment 4 Petr Skocik 2014-07-06 09:15:17 UTC

The bug persists with "Linux 3.16.0-031600rc3-generic #201406291835 SMP Sun Jun 29 22:36:41 UTC 2014" installed from 
http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.16-rc3-utopic/
as per the instructions on 
https://wiki.ubuntu.com/Kernel/MainlineBuilds#Installing_upstream_kernels
.

(I reported it to Ubuntu on https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1338035 and they gave me those links)

So it appears it's not Ubuntu specific and it still exists in what should be the newest kernel.

Comment 5 Petr Skocik 2014-07-06 09:16:45 UTC

Created attachment 142171 [details]
dmesg_tail_on_3.16.0-031600rc3-generic.txt

Comment 6 Stanislaw Gruszka 2017-02-18 13:02:46 UTC

Is this still a problem on updated kernels?