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Daniel Frey <djqfrey <at> gmail.com> writes: |
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> It appears to be udev. Somewhere along in its stupid detection it |
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> decides to process USB devices before sata ports, thusly randomly |
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> renaming the boot drive to something else in the process. |
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> It took me forever to figure this out, I eventually had a lightbulb |
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> moment and used my phone to record video of it booting, then slowing it |
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> down, as when the kernel panics you can't scroll back up to see WTF |
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> happened. |
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Kernel crash dumps might help [1] |
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> This is an older machine, but I'm not convinced it's the motherboard |
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> doing this. I've checked the boot order in the BIOS. I've also tried |
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> setting and unsetting "BIOS order determines boot disk" in the kernel |
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> config and it made no difference. |
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You might want to 'emerge -1 sys-apps/hwids' |
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> What eventually fixed it was building USB as modules. (Another kludge!) |
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There are numerous 'usb sniffers' that capture data. Some clue |
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might be found using a usb sniffer. |
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> I have no custom udev rules, the only rules I could find were in |
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> /lib/udev/rules.d: |
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I use sys-fs/eudev. ymmv. |
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> Does anyone have any explanation for this daft behaviour or know where I |
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> should look? |
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> I have multiple machines and it's only this one that has this problem, |
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> which happened after a <at> world update long ago. |
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If you have a similar setup on similar hardware, then 'diff' the (dmesg) |
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boot log files for any differences and analyze. |
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hth, |
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James |
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[1] https://wiki.gentoo.org/wiki/Kernel_Crash_Dumps |
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