Quiteinsane and kooka fail to find the scanner
Sometimes I'll be able to use the scanner for a long time, do multiple scans, but sometimes it will hang while attempting to scan, and then these programs won't be able to find it. Sane-find-scanner still finds it though.
I'll try with xsane, perhaps it's "closer" to sane-find-scanner, so likewise able to find it.
I don't remember anymore, but I guess that if I reboot the scanner will work again, immediately after. But I guess sometimes it does not work even "for the first time".
I've tried the simplest thing which is just to unplug and plug again (it's USB, by the way, canoscan lide 25), but it does not make it work again, at least not consistently. I think it happened once, when I repluged it in another port, but I've tried it other times with no success, I guess.