Hello, On Fri, Nov 11, 2011 at 06:47:31AM +0100, Stanislaw Gruszka wrote: > On Thu, Nov 10, 2011 at 05:30:51PM +0100, Tomáš Janoušek wrote: > > I think all those T520 and T420s models have exactly the same wireless card. I > > don't see why they wouldn't have. :-) > > Well, laptops models have common mainboards, but peripheral components > might not be identical. Especially wireless card might vary from unit > to unit. For example: > > T520 with iwl6300: > http://smolt.fedoraproject.org/client/show/pub_0cbc8731-47d3-4ecf-8add-aa832b34edcd > T520 with iwl1000: > http://smolt.fedoraproject.org/client/show/pub_02f601d6-7a93-4c0e-bc01-a4a95db36086 > T520 with iwl6205: > http://smolt.fedoraproject.org/client/show/pub_0232252f-75a9-4050-a69b-c8e95e00eaf2 These links don't work, but my colleagues indeed do have iwl6205. They are, however, running 64-bit kernels, so I tried doing the same and I haven't been able to reproduce the issue for the past few hours. So it seems like it happens on 32-bit kernels only. This looks like a good workaround (better than getting a different wireless card), so I can run 64-bit during working days and experiment with 32-bit when I have time to debug this. Could you please elaborate on that thing with enabling IOMMU? The only thing I know about IOMMU is that it is somehow related to VT-d (passing whole PCI devices to virtual guests), and that I have to pass intel_iommu=off to kernel command line, otherwise the machine doesn't even boot. Is that a problem? Kind regards, -- Tomáš Janoušek, a.k.a. Liskni_si, http://work.lisk.in/ -- 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
