update: I re-installed Ubuntu 9.10 with 32bit kernel, and it worked. But the bitrate was only a tenth of the one I could get in Windows (checked with my provider's internet speedtest website).
So I tried ndiswrapper; it achieves Windows speed, but then freezes again. Then I removed ndiswrapper, sudo apt-get install linux-backports-modules-karmic, reboot -- and everything works fine and with high speed. The reported bitrate of iwconfig seems to be wrong however; it says 11Mb/s, but my actual download bitrate is 27Mbit/s peak. Regards, Michael on 01/27/2010 07:06 PM Michael Pronath wrote: > *Khashayar Naderehvandi wrote on */Fri Jan 8 13:42:21 CET 2010 /*: > * >> I recently purchased a wireless-n card, namely the D-link DWA-547. It >> has an atheros chipset and is nicely detected by the ath9k driver. I >> have been trying to get this card working with the Ubuntu 9.10 kernel >> (which is based on 2.6.31), as well as linux 2.6.32. I have also tried >> Ubuntu 9.10 backport wireless modules. >> >> lspci reports: >> 07:02.0 Network controller [0280]: Atheros Communications Inc. AR922X >> Wireless Network Adapter [168c:0029] (rev 01) >> Subsystem: D-Link System Inc Device [1186:3a78] >> Flags: bus master, 66MHz, medium devsel, latency 32, IRQ 12 >> Memory at fbae0000 (32-bit, non-prefetchable) [size=64K] >> Capabilities: [44] Power Management version 2 >> Kernel modules: ath9k >> >> The problem is that after a few minutes - sometimes seconds - the >> system halts to a complete freeze where the reset button is the only >> way out. Sometimes this happens before X has started, sometimes it >> happens right after a connection is established. There is no way for >> me to gather any information after the freeze and I haven't found >> anything in the logs. So, unfortunately, at the moment I have no clue >> as of how to provide this list with more information (and that's why >> this ended up being an email to the list, rather than a bug report) > > I had the same problem with the DWA-547 that I bought yesterday. The > system freezes deterministically everytime when I enter the WPA2 > password in nm-applet. The next time booting, nm-applet had the > password saved and tries to connect right away, hence it freezes > before the Desktop is fully up. It is a 64bit Linux installation of > Ubuntu 9.10, updated yesterday. > > I just booted from a 32bit Ubuntu 9.10 CD; then it works and doesn't > freeze. So I assume it's a problem with the ath9k driver specifically > in the 64bit kernel. Now I'll replace my 64bit installation with the > 32bit one, as I have no reason to run 64bit Linux anyway. > > If yours is a 64bit kernel: could you try the same (boot from 32bit > CD) to see if things get better? > > > Regards, > Michael > > _______________________________________________ ath9k-devel mailing list ath9k-devel@lists.ath9k.org https://lists.ath9k.org/mailman/listinfo/ath9k-devel
