Brother MFC-6490CW Scanner problems

[Linda]

On 05/08/2014 07:09 AM, Linda wrote:
> On 05/07/2014 11:09 PM, Juan R. de Silva wrote:
>> On Wed, 07 May 2014 17:26:35 -0500, Linda wrote:
>>
>>> I'm setting up a new machine with 12.04 LTS stable.  I 
>>> got the Brother
>>> MFC-6490CW to work as a printer over the network but it 
>>> will not work as
>>> a scanner over the network.  I tired all of the possible 
>>> solutions I
>>> found on line adding users to groups etc but both Xsane 
>>> and simple scan
>>> fail. In frustration I removed the network scanner with 
>>> brscan3config
>>> and tried plugging it in with a usb cord. If I do this 
>>> Xsane gives me a
>>> Failed to start scanner:Invalid argument message but if 
>>> you select the
>>> scan button again it works. Simple scan gives Failed to 
>>> scan, unable to
>>> start scan message. Does anyone have any ideas? I could 
>>> live with having
>>> it plugged in as a usb scanner but would like to get it 
>>> working without
>>> the error message.
>>>                                      Thanks
>>>                                       Linda
>> I have MFC-7064DN and never had any problems with it. 
>> Yours looks quite
>> similar.
>>
>> What drivers did you use? Did you get drivers for your 
>> MFC from Brother
>> web site? Did you follow Brother installation 
>> instructions to the letter?
>>
>> If you did, you should run the following command in 
>> terminal after you
>> installed the scanner driver:
>>
>> brsaneconfigX -a name=[scanner_name (choose some)] 
>> model=MFC6490CW ip=
>> [give_its_ip_addres_here]
>>
>> I had to use brsaneconfig4, you mentioned brsaneconfig3. 
>> You know better
>> what is suitable for your scanner.
>>
>>
> Yes I got the drivers from the Brothers site and followed 
> the instructions. The frustrating part is I had it working 
> without a problem on the previous machine. I think I'll 
> try removing all the sane packages and the scanner drivers 
> and start from scratch
>                 Linda

Tried running
  sudo scanimage --test

scanimage: rounded value of br-x from 297 to 296.973
scanimage: rounded value of br-y from 420 to 419.962
scanimage: sane_start: Invalid argument

Any ideas?  I tried removing all the brother packages and 
scanner drivers and starting over but no change. I can start 
Xsane, try to scan click okay on error message than can scan 
with out a problem until I close Xsane. The machine it is 
replacing still works so if anyone has any ideas of 
configuration files I might try copying to the new machine I 
could try that.
                       Linda