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<p><font size="4"><font face="Times New Roman">This is a new
all-in-one printer to me. It scans fine from windows, but is
not detected with "scanimage -L".</font></font></p>
<p><font size="4"><font face="Times New Roman">The printer is
connected by usb cable to my pc; OS is Ubuntu 20.04.5 LTS.
The Canon TS6420a replaces the Canon TS6200 which</font></font></p>
<p><font size="4"><font face="Times New Roman">I had previously.
With the 6200, there was also a problem trying to use Xsane,
and it was resolved with a patch - this was in March, 2019.</font></font></p>
<p><font size="4"><font face="Times New Roman">The patch fixed the
problem and I was able to do some testing on the 6200. Hope
the 6420 can be revived! <br>
</font></font></p>
<p><font size="4"><font face="Times New Roman">Here are outputs from
terminal commands:</font></font></p>
<p><font size="4"><font face="Times New Roman">~$ lsusb<br>
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub<br>
Bus 001 Device 006: ID 046d:c534 Logitech, Inc. Unifying
Receiver<br>
Bus 001 Device 005: ID 0bda:0153 Realtek Semiconductor Corp.
3-in-1 (SD/SDHC/SDXC) Card Reader<br>
Bus 001 Device 004: ID 05e3:0608 Genesys Logic, Inc. Hub<br>
Bus 001 Device 003: ID 046d:c517 Logitech, Inc. LX710 Cordless
Desktop Laser<br>
Bus 001 Device 002: ID 04a9:18d3 Canon, Inc. TS6400 series<br>
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub</font></font></p>
<p><font size="4"><font face="Times New Roman">~$ sane-find-scanner<br>
<br>
# sane-find-scanner will now attempt to detect your scanner.
If the<br>
# result is different from what you expected, first make
sure your<br>
# scanner is powered up and properly connected to your
computer.<br>
<br>
# No SCSI scanners found. If you expected something
different, make sure that<br>
# you have loaded a kernel SCSI driver for your SCSI
adapter.<br>
<br>
found USB scanner (vendor=0x04a9 [Canon], product=0x18d3
[TS6400 series]) at libusb:001:002<br>
# Your USB scanner was (probably) detected. It may or may
not be supported by<br>
# SANE. Try scanimage -L and read the backend's manpage.<br>
<br>
# Not checking for parallel port scanners.<br>
<br>
# Most Scanners connected to the parallel port or other
proprietary ports<br>
# can't be detected by this program.<br>
<br>
# You may want to run this program as root to find all
devices. Once you<br>
# found the scanner devices, be sure to adjust access
permissions as<br>
# necessary.</font></font></p>
<p>$ scanimage -L<br>
<br>
No scanners were identified. If you were expecting something
different,<br>
check that the scanner is plugged in, turned on and detected by
the<br>
sane-find-scanner tool (if appropriate). Please read the
documentation<br>
which came with this software (README, FAQ, manpages).</p>
<p>Output from $ SANE_DEBUG_DLL=5 scanimage -L is very long. <br>
</p>
<p>$ scanimage -V<br>
scanimage (sane-backends) 1.0.29; backend version 1.0.29<br>
</p>
<p><br>
</p>
<p><br>
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