need help: /dev/usb missing but (some) usb work

jome0008 · n00b Joined: 11 Jan 2004 Posts: 7

The problem is that the printer is named /dev/lp0 and not /dev/usb/lp0 (or /dev/usblp0) which is expected by the printer/scanner driver hplip. I can print (with the usb printer driver pointing to /dev/lp0) and the the USB harddrive is working.

I used to have /dev/usb working until I updated recently.
But the problem is that I updated a lot and don't know what caused the problem.
I know the baselayout is new, the kernel is new (from 2.6.11 to 2.6.15) and about everything else as well.
I only used UHCI and not EHCI before (from what I remember but they where compiled as modules).

Tried to write an udev rule to fix it but it didn't work...

desktopfan · Posted: Sun Feb 05, 2006 10:43 pm Post subject:

I have no /dev/usb too.

However all my usb stuff works. Maybe the baselayout is too new for the driver?
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Error #152 - Windows not found: (C)heer (P)arty (D)ance.

jome0008 · n00b Joined: 11 Jan 2004 Posts: 7

cdrom disappeared after udev update

genterminl · Posted: Tue Feb 07, 2006 12:46 am Post subject:

Similar problem. First reboot after recent upgrade to baselayout gave me a lost /dev/hda. My CONFIG_LOCALVERSION ('02' instead of '-02') confused the version testing so udev was using the wrong startup stuff. Fixing that, /dev/hda is fine, but I"m still missing /dev/usb. The kernel is obviously seeing the usb stuff, because lsusb shows everything correctly (just one printer) and pointing CUPS to the printer at /dev/lp0 instead of /dev/usb/lp0 seems to work fine.

kernel 2.6.10 (Yes, I know it's old. I'll upgrade any day now :wink:

)
udev 079-r1
baselayout 1.11.14-r3 (same problem with 1.11.14, I believe)

Turning udev logging on produces two new lines:
Feb 6 19:12:38 [udevd-event] wait_for_sysfs: waiting for '/sys/devices/pci0000:00/0000:00:02.2/usb1/1-1/bus' failed
Feb 6 19:12:42 [udevd-event] wait_for_sysfs: waiting for '/sys/devices/pci0000:00/0000:00:02.2/usb1/1-1/1-1:1.0/bus' failed

I thought I saw two similar lines without the failed just before these on bootup, but only these are in the log.

It seems like udev is simply failing to create /dev/usb at startup time, so cold/hotplug can't create nodes under it. Is this some sort of version mismatch?

COMKEEN · n00b Joined: 07 Nov 2003 Posts: 70

I hope this will get fixed soon. I had some serious problems with udev-079-r1 and the new baselayout-1.11.14-r1, too (see https://forums.gentoo.org/viewtopic-t-435692-highlight-udev079r1.html). Has anyone found out how to get rid of those wait_for_sysfs errors?

bakaohki · Posted: Wed Feb 22, 2006 7:11 pm Post subject: udev madness again

I'm really getting tired of all this udev sh*t...
Neither /dev/usb nor /dev/cdroms get created around here. Now I had to reconfigure stuff for /dev/hdc and /dev/lp0. Guess I'll remove udev from my world file for good.

genterminl · Posted: Wed Feb 22, 2006 11:20 pm Post subject:

Well, I upgraded my kernel to 2.6.15 and everything seems to work again. I have no idea what the problem actually was.

If /dev nodes are not getting created - there are a few quick things you can check. Are the appropriate modules loaded? For the CDROMs, you probably need to add ide-cd to the appropriate file in /etc/modules.autoload.d. For usb, is there evidence that the kernel actually knows the device is present? Have you tried manually loading the appropriate modules?

COMKEEN · n00b Joined: 07 Nov 2003 Posts: 70

I second that updating to a 2.6.15-something kernel does resolve the udev and baselayout problems, but you should be informed that you may have serious problems with the nvidia-drivers then. There are already some threads out there. In short: Updating to ~x86 nvidia-kernel-1.0.8178-r3 should fix the occuring problems.

genterminl · Posted: Tue Feb 28, 2006 12:17 am Post subject:

Finally. Something that probably won't bite me. I don't have nvidia - just an old ATI Rage 128.