LinuxQuestions.org
Review your favorite Linux distribution.
Go Back   LinuxQuestions.org > Forums > Linux Forums > Linux - Distributions > Slackware
User Name
Password
Slackware This Forum is for the discussion of Slackware Linux.

Notices

Reply
 
Search this Thread
Old 05-30-2013, 01:41 PM   #1
ryanpcmcquen
Member
 
Registered: Apr 2013
Distribution: Slackware
Posts: 151

Rep: Reputation: Disabled
Thumbs up Ralink RT5390 spotty WiFi performance on any kernel past 3.2.x series


I know this should be posted in the hardware forums (maybe). But I think the Slackware community is the most knowledgeable and most likely to provide help in this case. Also, I am running Slackware. :-)

If I'm running Slackware -current with the 3.8.13 (smp) kernel, my WiFi performance is spotty (my laptop is an HP DV6.6135dx, for reference sake). This isn't distro specific, I have spotty performance on any other distro, and any kernel greater than 3.2.x. I'm not sure what changed from 3.2.x to current kernels in wireless modules but my WiFi cuts out a lot, or is slow (and using wicd, networkmanager, netcfg, netctl or even just pure wpa_supplicant does not help).

I have already tried:

- Disabling 'N' speeds on router
- Compiling driver from Ralink's website (it causes a kernel panic)

Any ideas on how I might improve performance?

Thank you in advance. ;-)
 
Old 05-31-2013, 07:38 AM   #2
irgunII
Member
 
Registered: Jan 2012
Location: Directly above the center of the earth
Distribution: Slackware. There's something else?
Posts: 383

Rep: Reputation: 71
AFAIC, you won't get it any better than it is. Wifi just isn't quite 'there' yet in Linux, IMO. I was having the same troubles as you, with two different routers from two different companies and still had the trouble and wicd and networkmanager.

We just need more people to get in on the wifi thing with linux, like engineers and such, to help get it where it needs to be. Until then, I suggest going back to wired - it's fast, steady, reliable and 'just works'.
 
Old 05-31-2013, 08:24 AM   #3
ryanpcmcquen
Member
 
Registered: Apr 2013
Distribution: Slackware
Posts: 151

Original Poster
Rep: Reputation: Disabled
I'm curious as to why there would be a regression in performance though ...
 
Old 05-31-2013, 04:34 PM   #4
irgunII
Member
 
Registered: Jan 2012
Location: Directly above the center of the earth
Distribution: Slackware. There's something else?
Posts: 383

Rep: Reputation: 71
Meh...it happens, I suppose. I saw it with the module build for older Philips webcams when the kernel people suddenly said they didn't want it to be able to tap in, so for a long time us Philips owners got the shaft, then suddenly it's 'built in' in the kernel but doesn't work nearly as well as the old way of installing it and using it did, so I have a perfectly good (even if it is 'old' it's *still* got a better picture than most of the 'new' webcam pics I've seen) webcam gathering dust.

Hopefully word will get out about the newer kernels not working as well as older ones with wifi and things will 'get fixed'. Can't never tell though.
 
Old 06-03-2013, 12:11 AM   #5
romberg
LQ Newbie
 
Registered: Jun 2013
Posts: 4

Rep: Reputation: Disabled
For drivers that use the rt2800lib module someone messed around with the tx power. It causes the rt2800pci (and probably other) drivers to revert to the bandwidth of smoke signals on a cloudy day. The patch here fixes it:

https://bugzilla.redhat.com/show_bug...iple&id=950735

Mike
 
1 members found this post helpful.
Old 06-03-2013, 10:41 AM   #6
ryanpcmcquen
Member
 
Registered: Apr 2013
Distribution: Slackware
Posts: 151

Original Poster
Rep: Reputation: Disabled
Thank you romberg! Guess I'll be jumping to the testing kernel!
 
Old 06-03-2013, 11:41 AM   #7
romberg
LQ Newbie
 
Registered: Jun 2013
Posts: 4

Rep: Reputation: Disabled
There is no testing kernel that I'm aware of. You need to:

- download the source to the vanilla 3.8 or later.

- Apply the patch mentioned above.

- build and install.

Mike

P.S. I'm not sure who marked this thread as "SOLVED". It clearly is not solved. This is just a repair at sea. The boat still has a hole in it.

Last edited by romberg; 06-03-2013 at 11:43 AM.
 
Old 06-03-2013, 11:57 AM   #8
ryanpcmcquen
Member
 
Registered: Apr 2013
Distribution: Slackware
Posts: 151

Original Poster
Rep: Reputation: Disabled
Is this patch being incorporated upstream in 3.9?
 
Old 06-03-2013, 12:07 PM   #9
romberg
LQ Newbie
 
Registered: Jun 2013
Posts: 4

Rep: Reputation: Disabled
Not that I'm aware of. That is why I'm out doing my best to be a "squeaky wheel"

Mike

Last edited by romberg; 06-03-2013 at 12:10 PM.
 
Old 06-03-2013, 12:11 PM   #10
ryanpcmcquen
Member
 
Registered: Apr 2013
Distribution: Slackware
Posts: 151

Original Poster
Rep: Reputation: Disabled
We need to make that happen, I don't want to be forced into patching all kernels. Have you also posted the bug here? https://bugzilla.kernel.org/
 
Old 06-03-2013, 12:15 PM   #11
ryanpcmcquen
Member
 
Registered: Apr 2013
Distribution: Slackware
Posts: 151

Original Poster
Rep: Reputation: Disabled
Let me know how I can compound your squeakiness!
 
Old 06-03-2013, 12:25 PM   #12
romberg
LQ Newbie
 
Registered: Jun 2013
Posts: 4

Rep: Reputation: Disabled
Quote:
Originally Posted by ryanpcmcquen View Post
Let me know how I can compound your squeakiness!
If you wanna report this to kernel.org that might help. I just have too many kernels hanging around on this system and this is starting to resemble "work".

Building a vanilla kernel is really not all that difficult.

- Download the source from ftp.kernel.org.

- Apply the patch "cat patchfile > patch -p1" (might be -p0 or p2 but I think p1 does it)

- copy in a .config file from another kernel build. Say, the one your distribution uses. On fedora they are stashed under /boot

- "make oldconfig; make; make modules_install; make install"

Mike
 
1 members found this post helpful.
Old 06-03-2013, 12:32 PM   #13
ryanpcmcquen
Member
 
Registered: Apr 2013
Distribution: Slackware
Posts: 151

Original Poster
Rep: Reputation: Disabled
I'll report upstream when I get a chance, I need my WiFi!
 
Old 06-03-2013, 01:00 PM   #14
ryanpcmcquen
Member
 
Registered: Apr 2013
Distribution: Slackware
Posts: 151

Original Poster
Rep: Reputation: Disabled
Submitted!
https://bugzilla.kernel.org/show_bug.cgi?id=59261
 
Old 06-12-2013, 12:37 PM   #15
ryanpcmcquen
Member
 
Registered: Apr 2013
Distribution: Slackware
Posts: 151

Original Poster
Rep: Reputation: Disabled
Fix being incorporated upstream! Yay!

http://marc.info/?l=linux-wireless&m...6920914837&w=2
 
  


Reply

Tags
kernel, ralink, wifi


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
wifi connection is spotty JEV23 Linux - Wireless Networking 6 02-04-2012 12:53 AM
backtrack5 R1 VM and Ralink RT5390 bmike1 Linux - Wireless Networking 3 01-08-2012 10:39 PM
Need help with driver installation of Ralink rt5390 wireless on Oracle Linux StitchExperiment626 Linux - Laptop and Netbook 0 10-21-2011 05:30 PM
[SOLVED] [Ubuntu 10.04/Ralink RT5390] How to install? littlebigman Linux - Laptop and Netbook 9 05-29-2011 03:41 AM
[SOLVED] no wifi with ralink rt2870 after kernel panic and reboot Hewson Linux - Hardware 3 07-12-2010 01:54 PM


All times are GMT -5. The time now is 06:15 AM.

Main Menu
Advertisement
My LQ
Write for LQ
LinuxQuestions.org is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
Syndicate
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
identi.ca: @linuxquestions
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration