Public bug reported: I'm running current edgy eft on a Dell Inspiron 640m using the builtin intel WLAN chip driven by the ipw3945 driver.
Everything seems to work just find, as long as I don't have heavy traffic (normal webserving and even downloading files works rather well). But as soon as I transfer bigger amounts of data (such as big file transfers on the LAN or watching recorded TV shows using myhtv) the network disconnects repeatedly in intervals from 10 seconds up to 5 minutes. It seems to depend on how much exactly is beeing transfered, when the connection is maxed out then I get a disconnect quite fast. Googling for this revealed the following blog entry which seems to describe the same issue: http://www.tuxyturvy.com/blog/index.php?/archives/23-Using-the-IPW3945-with-Linux,-WPA,-and-the-SMP-Kernel.html I've tried the hint suggested in there (setting "maxcpus=1") and it does indeed fix the problem ('though it does disable the second core, obviously). The bug mentions the two mails from the ipw3945-devel mailing list which seem to contain a fix http://sourceforge.net/mailarchive/forum.php?thread_id=29070112&forum_id=47844 http://sourceforge.net/mailarchive/forum.php?thread_id=28878717&forum_id=47844 I've not tested these fixes, but the blog entry mentions that they fix the problem. As the fixes are not to the ip3945 driver, but to the ieee80211 subsystem the problem might as well occur with other drivers as well. ** Affects: linux-source-2.6.17 (Ubuntu) Importance: Untriaged Status: Unconfirmed -- WLAN disconnects repeatedly from AP when using WPA on a SMP machine https://launchpad.net/bugs/56894 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
