[sane-devel] issues with sane-pixma and Canon MX7600

[James Ring]

One more thing,

On Thu, Oct 29, 2015 at 10:13 AM, James Ring <sjr at jdns.org> wrote:
> Hi all,
>
> Up until recently, I've been able to scan fine with my Canon Pixma
> MX7600. Then I upgraded to Ubuntu Wily and I've started getting:
>
> $ scanimage
> scanimage: open of device pixma:MX7600_192.168.2.107 failed: Invalid argument
>
> The device pings and I can get to its HTTP port. Everything appears OK.
>
> If I run
>
> strace -f -s 256 -o /tmp/trace.txt scanimage
>
> the relevant output appears to be:
>
> socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP) = 204
> connect(204, {sa_family=AF_INET, sin_port=htons(8612),
> sin_addr=inet_addr("192.168.2.107")}, 16) = 0
> sendto(204, "BJNP\2\1\0\0\0\0\0\0\0\0\0\0", 16, 0, NULL, 0) = 16
> select(205, [204], NULL, NULL, {4, 0}) = 1 (in [204], left {3, 998257})
> recvfrom(204, "BJNP\202\1\0\0\0\0\0\0\0\0\0\20\0\1\10\0\6\4\0\0\205\316\356\343\300\250\2k",
> 2048, 0, NULL, N
> ULL) = 32
> close(204)
> write(2, "scanimage: open of device pixma:MX7600_192.168.2.107 failed:
> Invalid argument\n", 78) = 78
>
> It appears to me that the scanner is responding but the driver doesn't
> like the response. I'm running sane 1.0.14-11 and sane-utils
> 1.0.25+git201505.

I just verified that downgrading to libsane 1.0.24-4ubuntu1 from
1.0.25+git201505 allows me to scan again, so I definitely there's some
sort of sane-pixma regression in there.

> Any ideas?
>
> Regards,
> James

Thanks,
James