On Wed, Aug 24, 2011 at 02:21:51PM +0200, Andreas Hartmann wrote: > Stanislaw Gruszka schrieb: > > On Tue, Aug 23, 2011 at 11:07:36AM +0200, Andreas Hartmann wrote: > >> using rt2800usb with a Linksys WUSB600N v2 (rt3572) crashes the complete > >> machine (SMP, Core i5, linux 3.0) on unloading the module after using it > >> for a short period of time: > >> - 2 times netperf -t TCP_MAERTS -H host > >> - 2 times netperf -t TCP_STREAM -H host > >> > >> The error message in /var/log/messages is: > >> > >> phy0 -> rt2800_wait_wpdma_ready: Error - WPDMA TX/RX busy, aborting > >> > >> After the crash, you have to hard reset the machine. > > [...] > > > Otherwise perhaps you could photo crash logs on virtual terminal > > (switched by Alt+Ctrl+F2 from X-window) or by using netconsole or kdump. > > There is no crash dump - the machine just hangs up itself and the fan is > getting loader and loader (until max), because the machine is getting > hot more and more. Kernel should generate some information when it hangs, at least when debug options are enabled like CONFIG_DEBUG_SPINLOCK, CONFIG_DEBUG_OBJECTS, CONFIG_LOCKUP_DETECTOR, ... I just realized that compat-wireless-3.1-rc1-1, does not contain some rt2x00 fixes: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux.git;a=commit;h=4b1bfb7d2d125af6653d6c2305356b2677f79dc6 http://git.kernel.org/?p=linux/kernel/git/torvalds/linux.git;a=commit;h=df71c9cfceea801e7e26e2c74241758ef9c042e5 http://git.kernel.org/?p=linux/kernel/git/torvalds/linux.git;a=commit;h=674db1344443204b6ce3293f2df8fd1b7665deea Try to apply them first, or use compat-wireless-next. If they not help just try to reconfigure kernel to print messages on lockup. Note, I'm not able to reproduce hangup using steps you provide. However I have bad performance, between 6 and 16 Mbits/s measured by netperf on connection between two rt2800usb stations through WRT160NL AP. I'm going to look at this problem when I'll have a chance. Stanislaw -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
