Subject: Bug#628444: iwlagn - "MAC is in deep sleep", cannot restore wifi operation Hi Jonathan! Sorry I took a while to respond and apologies in advance for them being quite useless... > - steps to reproduce, assuming I had the same hardware Use the computer. My maximum time without hitting the bug has been less than 48 hours before I added the following module options: 11n_disable=1 power_save=0 wd_disable=1 which some googling suggested might solve it. They do not, but they make it less frequent. With them, I can even get a WEEK without seeing this. But notice I have different hw than the original reporter: mine is X200s with "Intel Corporation Ultimate N WiFi Link 5300" (pci-id: 8086:4236). > - expected result, actual result, and how the difference indicates a > bug (should be simple enough in this case) =) Expected result: wifi keeps working unless I switch it off using rf_kill, physical switch, unload the module, or turn off the computer. Actual result: suddenly, out of the blue, in the middle of typing an email in kmail, see attachment. Bug: the wifi card has certainly not changed into "Unknown hardware type" suddenly. > - how reproducible it is (100% of the time? 50%?) 100% when waiting long enough between reboots. > - which kernel versions you have tested, and results with each There were no problems in the 2.6-series. The bug occurs at least in the Debian kernel versions 3.2.0-1-amd64, 3.0.0-2-amd64, and 3.0.0-1-amd64. > - full "dmesg" output from booting and reproducing the bug, as an > attachment Do not have it now, if really necessary, will get it next time it occurs (which may be a while: I am back to 2.6.39 because I need to get work done). > - any other weird observations or workarounds No workaround. Above module parameters alleviate the issue. This is a regression, so I suggest someone with time (if anyone has it) bisects 2.6 and 3.2... horrible task, I do not envy anyone doing that. > upstream to a public mailing list. So the purpose of these questions > is to collect data on what's known so far as a starting point. Please CC me if you do. Cheers, Juha -- ----------------------------------------------- | Juha JÃykkÃ, juhaj@xxxxxx | | http://www.maths.leeds.ac.uk/~juhaj | ----------------------------------------------- syslog.txt |