Roger that. I will try. I do have a serial adapter cable semi-permanently attached to one of the XO's - i use it to debrick any RTC machines I get off ebay., so with training, I might be able to perform those steps too later, once I get to you on the first steps.
KG On Sun, Jun 19, 2011 at 8:48 AM, Daniel Drake <d...@laptop.org> wrote: > On 19 June 2011 13:14, Kevin Gordon <kgordon...@gmail.com> wrote: > > Since it seems to never work on any build, if you like, I can concentrate > on > > just os23 on multiple XO 1.0 machines on multiple USB ports and see if > there > > are any differences in where it halts, even if I've previously plugged it > in > > after boot or not. I've had it get to the 3rd dot before hanging on a > > couple of occasions, and I think that's the time I see the 'Starting > Cronds' > > on the console . So, if I have a more directed rather than shotgun plan, > > perhaps I can be more helpful. > > That's interesting, thanks for the extensive testing. > On the ticket I suggested some next steps for debugging. > http://dev.laptop.org/ticket/10568 > > The 3rd one you can do without a serial console. "See if you can > reproduce it as follows: move the sisusbvga.ko file to somewhere where > modprobe can't find it, boot the system and stop X. Then run a loop at > the shell of insmod;rmmod, see if that makes it possible to reproduce > the hang quickly" > > More specific instructions for this: > > Boot without USBVGA connector attached. Go to a root terminal and move > sisusbvga.ko to /root: > # mv /lib/modules/*/kernel/drivers/usb/misc/sisusbvga/sisusbvga.ko /root > > Power off the system, connect USBVGA, boot. It should boot > successfully, but without any VGA output. Press ctrl+alt+f2 to get to > a root terminal, and stop X/sugar with: > # stop prefdm > > Now load the sisusbvga driver manually and see if it hangs: > # insmod /root/sisusbvga.ko > > Wait a few seconds, see if the system is hung or if you can still type > on the console. > > If you can still type, unload the module: > # rmmod sisusbvga > > and now try loading/unloading a few more times with a few seconds > pause between each step. > # insmod /root/sisusbvga.ko > ... > # rmmod sisusbvga > ... > # insmod /root/sisusbvga.ko > ... > # rmmod sisusbvga > ... > etc > > The idea is to find out whether the system hang is caused by the > loading of sisusbvga. It might not hang first time, may require a few > attempts, hence the repeated loading. > > Thanks, > Daniel >
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