Scanner doesn't work anymore as regular user

[mahdi1234]

Hi,

I'm using my Epson 4490 Photo for like 15 years and all of sudden (worked two weeks ago), I cannot run it as regular user only as root (same both Vuescan and sane).

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$ sane-find-scanner
...
could not open USB device 0x04b8/0x0119 at 001:111: Access denied (insufficient permissions)

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# sane-find-scanner 
...
found USB scanner (vendor=0x04b8 [EPSON], product=0x0119 [EPSON Scanner]) at libusb:001:111

Any idea what changed?

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media-gfx/sane-backends-1.1.1-r2 
media-gfx/iscan-2.30.4.2-r1
media-gfx/iscan-plugin-gt-x770-2.1.2.1-r3

[alamahant]

Does

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sudo usermod -aG scanner $USER

help?

[mahdi1234]

I was already part of scanner group, so unfortunately that doesn't help.

[Hu]

Any idea what changed?

You would be in a better position to answer that. What has changed on the system in the last two weeks? Package updates? Configuration changes? Kernel update?

If you can't find anything that way, what does strace say about the good and bad cases? What call fails for the unprivileged user, but succeeds for the privileged user?

[sam_]

May be related to bug 644636.

[figueroa]

Did you update anything related to scanning?

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$ ls -ltr /var/log/portage | grep sane

We appear to have the same sane-backends, iscan, and iscan-plugins. My Epson Perfection V500 Photo continues to work as always. Maybe add "usb 0x04b8 0x0119" to /etc/sane.d/epkowa.conf if it's not already there? If it is, maybe comment it out? What happens if you start /etc/init.d/saned before sane-find-scanner? (Shouldn't be necessary.)

[mahdi1234]

Maybe add "usb 0x04b8 0x0119" to /etc/sane.d/epkowa.conf if it's not already there? If it is, maybe comment it out? What happens if you start /etc/init.d/saned before sane-find-scanner? (Shouldn't be necessary.)

Tried commenting out, starting service, putting back etc nothing helped

May be related to bug 644636.

Interesting, I figured so far then when I change in /lib/udev/rules.d/99-iscan.rules

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ENV{libsane_matched}=="yes", MODE="664", GROUP="scanner"

to

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ENV{libsane_matched}=="yes", MODE="777", GROUP="scanner"

it works under normal user, but I don't think this is really good solution.