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Howdy all,
Around the time of the 3.0 upgrade i started dropping packets from my wireless adapter.
(pinging my router).
It wasn't a problem (or at least as noticeable) pre 3.0.
I'm running: 05:05.0 Network controller: Ralink corp. RT2800 802.11n PCI
and using the stock rt2800pci kernel module.
I tried the rt2860 from the AUR because i saw comments that indicated that it may solve the problem
However on my system with that module installed and all of these guys blacklisted: rt2x00usb,rt2x00lib,
rt2800usb,rt2400pci,rt61pci,rt2x00pci,rt2800pci,rt2800lib,rt2500pci,rt2500usb,rt73usb
I end up with no wlan0 device
I've seen indications that this is a known problem, but i haven't seen many solutions.
Does anyone have any tricks to make rt2860 work? any other ideas? or is there an official status/bitch thread
someone could point me to?
Thanks.
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SOLUTION 9/25: After realizing that i was stuck in Wireless G mode I made another effort to get the RT2860 driver working.
The linchpin to the whole problem is that the RT2860 doesn't create "wlan0", it creates a "ra0".
Once I found that I was able to get connected with Wireless N and @ 5GHz there isn't as much noise so
no packet loss.
Last edited by qshonuff (2011-09-25 23:56:13)
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Can't help you specifically with that, but just last night my Atheros AR5008 adapter starting dropping 40%-80% of the packets to my router. It's unusably slow now. I had this problem with the 2.6.38 kernel and was able to solve it by passing the nohwcrypt option to the ath9k module, but that doesn't work anymore.
I'm now on the 3.0.4 kernel, Arch x64. Last updates that MAY be relevant were dbus-sharp, dbus-sharp-glib, and gnutls. I started having problems the day after upgrading these packages. I'm connecting in 802.11n mode.
I've been looking for evidence of related bugs but so far nothing. I wonder if this is a broader issue affecting more than just the Atheros or Ralink drivers?
EDIT: downgrading gnutls from 3.0.3-1 to 3.0.2-1 reduced my packet loss to about 15%, so the internet is now basically usable. I also tried downgrading glib-networking (which I updated to version 2.28.7-5 a few days back), but that didn't seem to help.
Last edited by rsking84 (2011-09-22 01:32:59)
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UPDATE: tried my wifi card on a downgraded 3.0.3 kernel, in fallback mode, on an Ubuntu 10.10 live cd, AND connecting to my Android phone instead of my router and observed varying degrees of packet loss in all cases. So that pretty much ruled out software glitches or router settings (which I haven't changed in 6-8 months anyway). Switching the channel on my router from 6 to 10 seems to have cleared things up for now.
False alarm about possible bugs I guess. I'm going to keep an eye on my performance and see if it stays consistent. If I keep having problems I think I have to conclude that it's just a bad card.
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The degree of mine is intermittent, currently 4% packet loss. but I'm constantly dropping packets.
It could be hardware i suppose, but i didn't notice the problem on the pre-3.0 kernel, or in windows, and i'm not big on coincidences.
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Update on this:
I realized that my wlan0 is stuck using Wireless G, which is 2.5 GHz, where in windows I was using Wireless N @5GHz.
Naturally the 2.5 GHz band is noisy and i'm sure i'm getting all sorts of disruption there.
Is there a RT2800 config option that i'm missing to make it use Wireless N?
Thanks
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I have some problems with a ralink chipset as well and it could be related to this...
My card is a D-link DWA-131 USB dongle and it was working perfectly with kernel 2.6.x. After the update to 3.0 it started acting weird: sometimes it seems the connection from some applications is just refused. For example, when I update the system, pacman will fail to connect to [core] but it will connect to the other repositories. If I run pacman again, it will work properly. When I launch minecraft, it will not connect the first time, even if I tell it to retry. If I launch it a second time it will connect without problems 100% of the times.
Any Idea? Networkmanager reports I'm using r8712u driver.
Thanks a lot!
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