[sane-devel] Problem with Canon Lide 220 scanner / sane / genesys: Device busy after computer start

[thillosen at free.fr]

I experienced same kind of troubles when using official versions.
I then updated to PPA, hoping it would contain some additional fixes.
But I still have the problem.

Le 2021-12-15 09:13, Kelly Price a écrit :
> These are from the PPA, right?
> 
> On Wed, Dec 15, 2021 at 12:05 PM <thillosen at free.fr> wrote:
>> 
>> I'm experiencing problems with a Canon Lide 220 scanner.
>> Everything worked fine right without any tweaking when I was in an 
>> older
>> version of Linux Mint Mate Edition (based on Ubuntu).
>> Since I updated to Linux Mint Mate 20.2 ("focal"), I'm now 
>> experiencing
>> weird behavior with my scanner.
>> My Canon Lide 220 scanner is handled by sane and genesys.
>> 
>> After booting, lsbusb can see my scanner:
>> Bus 001 Device 003: ID 04a9:190f Canon, Inc. CanoScan LiDE 220
>> 
>> sane-find-scanner is also able to find it correctly:
>> found USB scanner (vendor=0x04a9 [Canon], product=0x190f [CanoScan],
>> chip=GL848+) at libusb:001:003
>> 
>> But scanimage -L is failing to list any scanner.
>> It doesn't report any error, even if I call it with SANE_DEBUG_DLL=5
>> 
>> Interestingly, if I try:
>> scanimage --device "genesys:libusb:001:003" --format=tiff > test.tiff
>> Then it reports me: "Failed: device busy".
>> 
>> I found a weird bypass to get the scanner working:
>> If I keep pushing the physical "Send" button on the scanner and then
>> start a scan program on the computer, eventually, it may start 
>> working.
>> Then, once one scan worked, I don't need to play with the physical
>> buttons on the scanner anymore: I can do any scans I want directly 
>> from
>> the computer.
>> 
>> I never had this problem before.
>> Previously, I was able to start scans from the computer, without 
>> having
>> to feedle with the physical buttons on the scanner.
>> 
>> Currently, I'm using libsane-1.0.32-focal0, 
>> libsanecommon-1.0.32-focal0
>> and sane 1.0.14-15
>> 
>> Is this a bug in my version of sane?
>> Or do I need to configure something to fix this problem?
>> Please ask if you want me to log additional details.
>> 
>> Thanks,
>> 
>> Andreas THILLOSEN
>>