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gaurav712
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PostPosted: Sun Feb 24, 2019 7:34 pm    Post subject: [SOLVED] udev not working. Reply with quote

udev is running but still my system can't detect usb drives. What do I need to do?

Last edited by gaurav712 on Tue May 21, 2019 1:48 am; edited 1 time in total
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fedeliallalinea
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PostPosted: Sun Feb 24, 2019 7:40 pm    Post subject: Reply with quote

When you pulg usb in dmesg you see something?
You configured usb support in kernel?
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gaurav712
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PostPosted: Sun Feb 24, 2019 7:42 pm    Post subject: Reply with quote

fedeliallalinea wrote:
When you pulg usb in dmesg you see something?
You configured usb support in kernel?
Yup, There's no issue with kernel config because it was working till the last couple hours.
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krinn
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PostPosted: Mon Feb 25, 2019 10:14 am    Post subject: Reply with quote

unplug the device, run
udevadm monitor
and plug it back.

Now, from udevadm output you'll get udev part issue
And in dmesg, you'll see issue with kernel part
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gaurav712
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PostPosted: Mon Feb 25, 2019 11:16 am    Post subject: Reply with quote

krinn wrote:
unplug the device, run
udevadm monitor
and plug it back.

Now, from udevadm output you'll get udev part issue
And in dmesg, you'll see issue with kernel part
Already tried that. Nothing comes up.
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cboldt
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PostPosted: Mon Feb 25, 2019 6:03 pm    Post subject: Reply with quote

What do you mean by "won't detect" the drives?

No entry in the /dev folder?

Or not mounted?
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The Doctor
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PostPosted: Mon Feb 25, 2019 6:04 pm    Post subject: Reply with quote

gaurav712 wrote:
fedeliallalinea wrote:
When you pulg usb in dmesg you see something?
You configured usb support in kernel?
Yup, There's no issue with kernel config because it was working till the last couple hours.
What changed in the past couple of hours? Did you run a world update? That should give you a list of suspects.
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Gentlenoob
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PostPosted: Mon Feb 25, 2019 9:59 pm    Post subject: Reply with quote

Don't know if it's related, but right now I'm experiencing strange behaviour when upgrading udev-init-scripts from 32 to 33, e.g. not being able to connect to wlan. Downgrading to 32 and rebooting cured it.
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gaurav712
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PostPosted: Fri Mar 15, 2019 10:07 am    Post subject: Reply with quote

cboldt wrote:
What do you mean by "won't detect" the drives?

No entry in the /dev folder?

Or not mounted?
Not in the /dev listing mate
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NeddySeagoon
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PostPosted: Fri Mar 15, 2019 7:50 pm    Post subject: Reply with quote

gaurav712,

/dev is populated by devtmpfs in the kernel. udev adds symlinks and fiddles with permissions in /dev
It does not add device special nodes.
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gaurav712
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PostPosted: Tue May 21, 2019 1:47 am    Post subject: Reply with quote

NeddySeagoon wrote:
gaurav712,

/dev is populated by devtmpfs in the kernel. udev adds symlinks and fiddles with permissions in /dev
It does not add device special nodes.
/dev is fine. BTW, I solved it days ago but sorry I didn't mark it as solved.
The problem was : I didn't select USB-3.0 support in the kernel just because I don't have any USB-3.0 ports but it doesn't even supports USB-2.0 when I compile my kernel without that.
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