Hi, > > I have switched my network from WPA2 AES to WPA1 TKIP, and managed to run > the > machine for a much longer period before the lock-up. > > Now it locked up -- and for the first time, not completely dead, but with > the > leftmost LED above the keyboard flashing! Is it possible to obtain debug > information while in this state? > > I have tried some SysRq keys, but only Alt+SysRq+B worked (reboot). >
To get the kernel log, you can use SysRq and netconsole together, the kernel log will be sent out to another machine, then, you can access it. another potential debugging method is kexec+kdump, but currently, kdump doesn't work for Loongson. Before the system hang, did you find any weird kernel log? for example, Call Trace? >> > I am not sure which binutils are used for compiling the above-mentioned >> > kernels, but for my own test kernels I used "binutils-mipsel-linux-gnu >> > 2.20.1-16" (and those locked up too). >> >> Does your "as" provide the -mfix-loongson2f-nop option? > > Yes, it provides both -mfix-loongson2f-nop and -mfix-loongson2f-jump. > To be clear - I only built the .37 and .38 kernels (not .32), used them > briefly, and since I discovered they make no difference with regard to > lock-ups, I switched back to using the prebuilt .38 kernel from linux-libre > for now. So, your toolchain is ok. Where did you get your source code? http://dev.lemote.com/code/linux-loongson-community? or another place? Please note, all of my replies are based on the source code from http://dev.lemote.com/code/linux-loongson-community, and with the mainline 2.6.38 or 2.6.37, rtl8187b doesn't work and it may crash the whole kernel. the known problem is a mainline update, I just reverted that update and didn't look into it. Please get more from this commit: http://dev.lemote.com/cgit/linux-loongson-community.git/commit/?id=edd2adaaac2cbe6d4f27ccc79c91284e3fdbae40 Regards, Wu Zhangjin > > -- > With respect, > Roman > -- You received this message because you are subscribed to the Google Groups "loongson-dev" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/loongson-dev?hl=en.
