Announcement

**claydoh** · Nov 27, 2010, 05:07 PM

Re: Wireless not working after upgrade

http://ubuntuforums.org/showthread.php?t=1617290

It looks like the wrong driver is trying to be loaded, you may have to 'blacklist' the offending driver module. Please post the output of :

Code:

lsmod | grep rt2

And we can see what needs to be blacklisted (the things listed in the link may incorrect or overkill for your specific card)

**kln** · Nov 27, 2010, 09:08 PM

Re: Wireless not working after upgrade

Here it is :
I'm looking at the thread you've linked to.

Code:

$ lsmod | grep rt2
rt2860sta       559618 0 
rt2800pci       10233 0 
rt2800lib       31970 1 rt2800pci
rt2x00usb       11316 1 rt2800lib
rt2x00pci        6993 1 rt2800pci
crc_ccitt        1699 2 rt2860sta,rt2800pci
rt2x00lib       31575 4 rt2800pci,rt2800lib,rt2x00usb,rt2x00pci
led_class        3393 1 rt2x00lib
mac80211       266657 3 rt2x00usb,rt2x00pci,rt2x00lib
cfg80211       170293 2 rt2x00lib,mac80211
eeprom_93cx6      1789 1 rt2800pci

I've been using RT2860 so far.

**claydoh** · Nov 27, 2010, 09:19 PM

Re: Wireless not working after upgrade

you may have to blacklist the list, though perhaps trying one at a time so you don't loose anything suspend-wise.

**kln** · Nov 27, 2010, 09:36 PM

Re: Wireless not working after upgrade

Except the one that are linked with RT2860 ?
such as the 1st and the 6th one ...
What do you mean suspend-wise ?

Should I try to suspend to RAM each time to check ?

**claydoh** · Nov 27, 2010, 09:44 PM

Re: Wireless not working after upgrade

naw, just start with the first one in the list on the ubuntuforum post, and see if it works after a reboot, and keep adding until it does work. I *think* the rt2860sta may be the one you want to keep, the ones in the forum post I think are causing the conflict.

I have a different rt usb adapter that I actually had to blacklist the sta one (opposite of what everyone else was) in 10.04 - now working fine in 10.10 with no mods

**kln** · Nov 27, 2010, 10:03 PM

Re: Wireless not working after upgrade

Wow, it worked with the first line ... blacklist rt2800pci

So the hint was in the configuration line of the $ sudo lshw -C network command ? "driver=rt2800pci" means the wrong driver was loaded, I take it.

Thank you very much, that was a really fast solving. You guys are really good at spotting the cause of the problems !
I try another two days to check that there are no other problems then will mark the post as solved.

NB : I'm glad not to go back to 10.04 as the upgrade to 10.10 has at last solved the built-in mic problem on my laptop

**kln** · Nov 27, 2010, 10:15 PM

Re: Wireless not working after upgrade

Ok I got the same problem as Castor_fou, it doesn't resume after suspend to RAM. I check the post.

NB : now I got

Code:

$ lsmod | grep rt2
rt2860sta       559618 0 
crc_ccitt        1699 1 rt2860sta

-- which makes sense.

**claydoh** · Nov 27, 2010, 10:17 PM

Re: Wireless not working after upgrade

well, it shows which driver was loaded, wrong or not

sometimes one module loads others as well and you had a number of them loaded (from the output of lsmod I gave you) but exactly which one was causing it ??

I suspected the first one in the list, so thats where I had you start

, with others to try if I was wrong.

Anyway glad you are up and running. I wonder if it worth a bug report - there was one for my particular usb stick in 10.04,but i didn't quickly see one for yours in 10.10

**claydoh** · Nov 27, 2010, 10:28 PM

Re: Wireless not working after upgrade

I did find some but with varying ages Ubuntu versions, but no 100% solutions after a quick glance

**kln** · Nov 27, 2010, 10:33 PM

Re: Wireless not working after upgrade

in the thread you've linked (http://ubuntuforums.org/showthread.php?t=1617290&page=2), castor_fou did a BIOS update -- Zepto released one last year (mostly correcting - but not really correcting - an overheating issue) and has gone bankrupt since then >

I have no Fn-F2 wireless on/off command and any tricks, like switching on/off the switch and/or wicd, did not show any result.

**kln** · Nov 27, 2010, 10:48 PM

Re: Wireless not working after upgrade

Ok, I checked some of the bugs, but none offer an answer for failing to resume after startup.
$sudo rfkill unblock wifi doesn't work.

I will try more another time. By now, having wireless on startup is already a huge progress! Thanks a lot.

**claydoh** · Nov 28, 2010, 04:04 PM

Re: Wireless not working after upgrade

Actually one thing to try is to actually blacklist the rt2860sta driver as well, forcing the use of the 'normal' rt2860

though you may have to use

Code:

sudo modprobe rt2860

if the lsmod | grep rt2 output does not show the rt2860

just a longshot, but it actually worked for me in Lucid

**kln** · Nov 28, 2010, 08:01 PM

Re: Wireless not working after upgrade

Code:

$ sudo modprobe rt2860
[sudo] password for : 
FATAL: Module rt2860 not found.

So when I blacklist rt2860, nothing is left in lsmod | grep rt2 output, and no driver nor wireless is loaded.

When I installed the driver in April 2009 for the first time (built, installed and added to etc/modules), it was already the STA version, v1.8.0.0

**claydoh** · Nov 28, 2010, 08:12 PM

Re: Wireless not working after upgrade

it was a long
shot

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