Re: simple-scan fails with Canon LiDE 300--except as root
On Sat 09 Jan 2021 at 13:49:07 +, Dr. Jennifer Nussbaum wrote: > Yes, I can at least scan. I'll keep fiddling, but the important thing > is that I can use it. > > OK, thank you so much for your help, and sorry for the top-post at the > end. I will probably consult the sane-airscan author, but would not expect an immediate response. Another debugging idea if you want to narrow down whether simple-scan is the problem: scanimage d "airscan:e0:Canon LiDE 300 (USB)" --format=png > image.png Thanks for engaging. -- Brian.
Re: simple-scan fails with Canon LiDE 300--except as root
Yes, I can at least scan. I'll keep fiddling, but the important thing is that I can use it. OK, thank you so much for your help, and sorry for the top-post at the end. On Saturday, January 9, 2021, 08:44:25 AM EST, Brian wrote: On Sat 09 Jan 2021 at 13:22:30 +, Dr. Jennifer Nussbaum wrote: > > On Saturday, January 9, 2021, 08:07:37 AM EST, Brian > wrote: > > > On Sat 09 Jan 2021 at 12:55:07 +, Dr. Jennifer Nussbaum wrote: > > > > Can you scan by choosing airscan, eSCL (note the lower case e), from > > simple-scan's drop-down menu. > > This did work at first, and I was very excited! However, it worked on > a text scan; whenI tried an image scan, it hung for several minutes > with the error"Unable to find colord device airscan:e0:Canon LiDE 300 > (USB): property match 'Serial'='sane:airscan:e0:Canon LiDE 300 (USB)' > does not exist",and then after that I was unable to do another text > scan--with no error, it justhung. This is now getting above my pay grade, Jennifer. Could be a simple-scan bug or one in the device's firmware or in sane-airscan. Try switching the Canon off and disconnecting from USB. Re-power and re-plug after about a minute. > > > > Would you also try > > > > > > > > xsane "airscan:e0:Canon LiDE 300 (USB)"> > > > > and > > > > > > > > xsane ? > > > I don't have xsane installed. Is that just for background info? I've > > > used it in the past, and always foundit far too complicated to bother > > > with. > > > > You can always remove it afterwards, but I wanted to know which of > > the options it offers work. A preview is enough to do. > xsane works perfectly, whether or specify airscan from the > commandline, orif I just run it bare and then select either the pixma > or the eSCL airscandevice from the select box. This, at least, gives you working scanning. -- Brian.
Re: simple-scan fails with Canon LiDE 300--except as root
On Sat 09 Jan 2021 at 13:22:30 +, Dr. Jennifer Nussbaum wrote: > > On Saturday, January 9, 2021, 08:07:37 AM EST, Brian > wrote: > > > On Sat 09 Jan 2021 at 12:55:07 +, Dr. Jennifer Nussbaum wrote: > > > > Can you scan by choosing airscan, eSCL (note the lower case e), from > > simple-scan's drop-down menu. > > This did work at first, and I was very excited! However, it worked on > a text scan; whenI tried an image scan, it hung for several minutes > with the error"Unable to find colord device airscan:e0:Canon LiDE 300 > (USB): property match 'Serial'='sane:airscan:e0:Canon LiDE 300 (USB)' > does not exist",and then after that I was unable to do another text > scan--with no error, it justhung. This is now getting above my pay grade, Jennifer. Could be a simple-scan bug or one in the device's firmware or in sane-airscan. Try switching the Canon off and disconnecting from USB. Re-power and re-plug after about a minute. > > > > Would you also try > > > > > > > > xsane "airscan:e0:Canon LiDE 300 (USB)"> > > > > and > > > > > > > > xsane ? > > > I don't have xsane installed. Is that just for background info? I've > > > used it in the past, and always foundit far too complicated to bother > > > with. > > > > You can always remove it afterwards, but I wanted to know which of > > the options it offers work. A preview is enough to do. > xsane works perfectly, whether or specify airscan from the > commandline, orif I just run it bare and then select either the pixma > or the eSCL airscandevice from the select box. This, at least, gives you working scanning. -- Brian.
Re: simple-scan fails with Canon LiDE 300--except as root
On Sat 09 Jan 2021 at 12:55:07 +, Dr. Jennifer Nussbaum wrote: > >> On Saturday, January 9, 2021, 07:43:41 AM EST, Brian > wrote: > > On Sat 09 Jan 2021 at 12:31:43 +, Dr. > Jennifer Nussbaum wrote: > > > > > On Saturday, January 9, 2021, 07:19:39 AM EST, Brian > > > wrote: > > > > > > > Install sane-airscan and give > > > > > > > > scanimage -L > > > $ scanimage -L> > device `pixma:04A91913_47A8A4' is a CANON CanoScan LiDE > > > 300 multi-function peripheraldevice `escl:http://127.0.0.1:6' is a > > > Canon LiDE 300 (USB) flatbed scannerdevice `airscan:e0:Canon LiDE 300 > > > (USB)' is a eSCL Canon LiDE 300 (USB) ip=127.0.0.1 > > > > and > > > > > > > > airscan-discover > > > $ airscan-discover > > [devices] Canon LiDE 300 (USB) = > > > http://127.0.0.1:6/eSCL/, eSCL > > > When I try to run simple-scan now, it's the same result as before; debug > > > shows the airscan, but I still get the out-of-memory error. > > > Thank you for sticking with this. > > > > How do you go on with > > > > simple-scan "airscan:e0:Canon LiDE 300 (USB)" ? > This works. (As it did when we specified the "pixma" interface.) Thanks. I still do not understand how the pixma backend can work. ipp-usb has control of USB; pixma should be unable to access the USB bus. Can you scan by choosing airscan, eSCL (note the lower case e), from simple-scan's drop-down menu. > > Would you also try > > > > xsane "airscan:e0:Canon LiDE 300 (USB)"> > > and > > > > xsane ? > I don't have xsane installed. Is that just for background info? I've > used it in the past, and always foundit far too complicated to bother > with. You can always remove it afterwards, but I wanted to know which of the options it offers work. A preview is enough to do. -- Brian.
Re: simple-scan fails with Canon LiDE 300--except as root
On Sat 09 Jan 2021 at 12:31:43 +, Dr. Jennifer Nussbaum wrote: > On Saturday, January 9, 2021, 07:19:39 AM EST, Brian > wrote: > > > Install sane-airscan and give > > > > scanimage -L > $ scanimage -Ldevice `pixma:04A91913_47A8A4' is a CANON CanoScan LiDE 300 > multi-function peripheraldevice `escl:http://127.0.0.1:6' is a Canon LiDE > 300 (USB) flatbed scannerdevice `airscan:e0:Canon LiDE 300 (USB)' is a eSCL > Canon LiDE 300 (USB) ip=127.0.0.1 > > and > > > > airscan-discover > $ airscan-discover [devices] Canon LiDE 300 (USB) = > http://127.0.0.1:6/eSCL/, eSCL > When I try to run simple-scan now, it's the same result as before; debug > shows the airscan, but I still get the out-of-memory error. > Thank you for sticking with this. How do you go on with simple-scan "airscan:e0:Canon LiDE 300 (USB)" ? Would you also try xsane "airscan:e0:Canon LiDE 300 (USB)" and xsane ? -- Brian.
Re: simple-scan fails with Canon LiDE 300--except as root
On Sat 09 Jan 2021 at 03:53:28 +, Dr. Jennifer Nussbaum wrote:
> Just to clarify what someone else in the thread asked about, the user
> I'm running this under _does_ appear in the scanner group.
For what you wish to achieve, being a member of the scanner group is
completely unnecessary. See
https://wiki.debian.org/Scanner
> On Friday, January 8, 2021, 07:07:40 PM EST, Brian
> wrote:
> On Fri 08 Jan 2021 at 17:28:16 -0500, Jen Nussbaum wrote:
>
> >> When I run simple-scan, it detects the printer and announces itself
> >> ready to go, but when I try to scan anything, I get the message
> >> "Failed to scan Unable to connect to scanner". I Googled for anything
> >> related to this; there's a bunch of stuff on Ubuntu and Mint forums
> >> about purging the "ippusbxd" package, but this isn't on Debian.
> >
> > ippusbxd is certainly not on Debian but ipp-usb is. See the wiki.
>
> Yes, and I do have that; the point was just that the solution that
> worked onMint (to remove ippusbxd and install ipp-usb) isn't relevant
> here.
ipp-usb is relevant insofar as it enables the sane-escl and sane-airscan
backends to be used for scanning.
> >> I then ran simple-scan with the debug flag, and at the moment I try to
> >> initiate a scan, I got:
> >>
> >> [+20.83s] DEBUG: simple-scan.vala:1817: Requesting scan at 150 dpi from
> >> device 'escl:http://127.0.0.1:6'
> >> [+20.83s] DEBUG: scanner.vala:1683: Scanner.scan
> >> ("escl:http://127.0.0.1:6;, dpi=150, scan_mode=ScanMode.GRAY, depth=2,
> >> type=single, paper_width=0, paper_height=0, brightness=0, contrast=0,
> >> delay=3000ms)
> >> [+20.83s] DEBUG: scanner.vala:828: Processing request
> >> [+20.83s] DEBUG: scanner.vala:889: sane_open
> >> ("escl:http://127.0.0.1:6;) -> SANE_STATUS_NO_MEM
> >> [+20.83s] WARNING: scanner.vala:893: Unable to open device: Out of memory
> >
> > Nothing about the pixma backend (driver)?
>
> pixma only appears during the startup:
> [+7.62s] DEBUG: scanner.vala:353: Device: name="pixma:04A91913_47A8A4"
> vendor="CANON" model="CanoScan LiDE 300" type="multi-function
> peripheral"
>
> > Just to confirm your experience, what happens with scanning with
> >
> > simple-scan "pixma:04A91913_47A8A4"
>
> This fires up simple scan, and when I click on "scan" it scans the
> document successfully.
I would not expect this to hapen when ipp-usb is active, which it is.
See
https://wiki.debian.org/CUPSDriverlessPrinting
> > and
> >
> > simple-scan "escl:http://127.0.0.1:6;
>
> This does _not_ work; the response here is the same as when I run it
> normally, i.e. the "Unable to contact scanner" error.
sane-escl is designed to work with an active ipp-usb. This may be a bug
in the backend.
> >> I don't know why I tried this, but I then ran simple-scan as root,
> >> and...it worked perfectly.
> >
> > I do not understand why this should be so. Do both the previous commands
> > work as root?
>
> The "pixma" version worked as root, as it did as the regular user.
> Curiously, the "escl" version did not work as root,even though when I
> run simple-scan without any arguments, it did work as root.
At this site, neither simple-scan nor xsane opens a display when run as
root.
> > > I'm bewildered by this--any idea what I should be looking at?
> >
> > Yes; there is a possible solution. Give what you get for
> >
> > lsusb -v | grep -A 3 bInterfaceClass.*7
>
> ---$ lsusb -v | grep -A 3 bInterfaceClass.*7Couldn't open device, some
> information will be missing bInterfaceClass 7 Printer
> bInterfaceSubClass 1 Printer bInterfaceProtocol 4
> iInterface 0 can't get debug descriptor: Resource temporarily
> unavailableCouldn't open device, some information will be missingCouldn't
> open device, some information will be missing-- bInterfaceClass
> 7 Printer bInterfaceSubClass 1 Printer bInterfaceProtocol
> 4 iInterface 0 Couldn't open device, some information will
> be missingCouldn't open device, some information will be missingcan't get
> debug descriptor: Resource temporarily unavailableCouldn't open device, some
> information will be missing---
> (The "Couldn't open device" line was repeated multiple times wherever
> it appeared;I deleted it here for brevity.)
"bInterfaceProtocol 4" indicates that the Canon LiDE 300
understands the IPP-over-USB protocol.
> > and
> >
> > systemctl list-units "ipp-usb*" | grep service
>
> ---$ systemctl list-units "ipp-usb*" | grep service ipp-usb.service loaded
> active running Daemon for IPP over USB printer support---
Indicates that the IPP-over-USB protocol is being used.
Install sane-airscan and give
scanimage -L
and
airscan-discover
--
Brian.
Vim fails with some unspecified out-of-memory error [was: Re: simple-scan fails with Canon LiDE 300--except as root]
On Vi, 08 ian 21, 23:20:46, ghe2001 wrote: > > > ‐‐‐ Original Message ‐‐‐ > On Friday, January 8, 2021 10:28 PM, Jen Nussbaum wrote: > > > I don't know why I tried this, but I then ran simple-scan as root, and...it > > worked perfectly. > > I had a similar problem with vim -- I have no idea what was wrong. I > fixed it with a line in .bashrc: alias vi="sudo vi" (I was already in > /etc/sudoers with a no password login). This is most likely completely unrelated. > Not the most elegant solution, but it saved a lot of time, and it works... The fix probably works simply because you are running vi(m) as a different user and consequently with a different configuration. You can easily confirm this either by running vim as a different *regular* user, or just moving your ~/.vimrc and ~/.vim/ out of the way. Kind regards, Andrei -- http://wiki.debian.org/FAQsFromDebianUser signature.asc Description: PGP signature
Re: simple-scan fails with Canon LiDE 300--except as root
Just to clarify what someone else in the thread asked about, the user I'm
running this under _does_ appear in the scanner group.
On Friday, January 8, 2021, 07:07:40 PM EST, Brian
wrote:
On Fri 08 Jan 2021 at 17:28:16 -0500, Jen Nussbaum wrote:
>> When I run simple-scan, it detects the printer and announces itself
>> ready to go, but when I try to scan anything, I get the message
>> "Failed to scan Unable to connect to scanner". I Googled for anything
>> related to this; there's a bunch of stuff on Ubuntu and Mint forums
>> about purging the "ippusbxd" package, but this isn't on Debian.
>
> ippusbxd is certainly not on Debian but ipp-usb is. See the wiki.
Yes, and I do have that; the point was just that the solution that worked
onMint (to remove ippusbxd and install ipp-usb) isn't relevant here.
>> I then ran simple-scan with the debug flag, and at the moment I try to
>> initiate a scan, I got:
>>
>> [+20.83s] DEBUG: simple-scan.vala:1817: Requesting scan at 150 dpi from
>> device 'escl:http://127.0.0.1:6'
>> [+20.83s] DEBUG: scanner.vala:1683: Scanner.scan
>> ("escl:http://127.0.0.1:6;, dpi=150, scan_mode=ScanMode.GRAY, depth=2,
>> type=single, paper_width=0, paper_height=0, brightness=0, contrast=0,
>> delay=3000ms)
>> [+20.83s] DEBUG: scanner.vala:828: Processing request
>> [+20.83s] DEBUG: scanner.vala:889: sane_open ("escl:http://127.0.0.1:6;)
>> -> SANE_STATUS_NO_MEM
>> [+20.83s] WARNING: scanner.vala:893: Unable to open device: Out of memory
>
> Nothing about the pixma backend (driver)?
pixma only appears during the startup:
[+7.62s] DEBUG: scanner.vala:353: Device: name="pixma:04A91913_47A8A4"
vendor="CANON" model="CanoScan LiDE 300" type="multi-function peripheral"
> Just to confirm your experience, what happens with scanning with
>
> simple-scan "pixma:04A91913_47A8A4"
This fires up simple scan, and when I click on "scan" it scans the document
successfully.
> and
>
> simple-scan "escl:http://127.0.0.1:6;
This does _not_ work; the response here is the same as when I run it normally,
i.e. the "Unable to contact scanner" error.
>> I don't know why I tried this, but I then ran simple-scan as root,
>> and...it worked perfectly.
>
> I do not understand why this should be so. Do both the previous commands
> work as root?
The "pixma" version worked as root, as it did as the regular user. Curiously,
the "escl" version did not work as root,even though when I run simple-scan
without any arguments, it did work as root.
> > I'm bewildered by this--any idea what I should be looking at?
>
> Yes; there is a possible solution. Give what you get for
>
> lsusb -v | grep -A 3 bInterfaceClass.*7
---$ lsusb -v | grep -A 3 bInterfaceClass.*7Couldn't open device, some
information will be missing bInterfaceClass 7 Printer
bInterfaceSubClass 1 Printer bInterfaceProtocol 4
iInterface 0 can't get debug descriptor: Resource temporarily
unavailableCouldn't open device, some information will be missingCouldn't open
device, some information will be missing-- bInterfaceClass 7
Printer bInterfaceSubClass 1 Printer bInterfaceProtocol 4
iInterface 0 Couldn't open device, some information will be
missingCouldn't open device, some information will be missingcan't get debug
descriptor: Resource temporarily unavailableCouldn't open device, some
information will be missing---
(The "Couldn't open device" line was repeated multiple times wherever it
appeared;I deleted it here for brevity.)
> and
>
> systemctl list-units "ipp-usb*" | grep service
---$ systemctl list-units "ipp-usb*" | grep service ipp-usb.service loaded
active running Daemon for IPP over USB printer support---
Thank you.
Re: simple-scan fails with Canon LiDE 300--except as root
On Fri 08 Jan 2021 at 17:28:16 -0500, Jen Nussbaum wrote:
>
> After using a rather old Canon scanner for many years, I recently
> upgraded to the Canon LiDE 300, and installed the drivers as directed,
> on a Bullseye system (10.2.0-17).
>
> The printer is recognized:
>
> $ scanimage -L
> device `pixma:04A91913_47A8A4' is a CANON CanoScan LiDE 300 multi-function
> peripheral
> device `escl:http://127.0.0.1:6' is a Canon LiDE 300 (USB) flatbed scanner
>
> When I run simple-scan, it detects the printer and announces itself
> ready to go, but when I try to scan anything, I get the message
> "Failed to scan Unable to connect to scanner". I Googled for anything
> related to this; there's a bunch of stuff on Ubuntu and Mint forums
> about purging the "ippusbxd" package, but this isn't on Debian.
ippusbxd is certainly not on Debian but ipp-usb is. See the wiki.
> I then ran simple-scan with the debug flag, and at the moment I try to
> initiate a scan, I got:
>
> [+20.83s] DEBUG: simple-scan.vala:1817: Requesting scan at 150 dpi from
> device 'escl:http://127.0.0.1:6'
> [+20.83s] DEBUG: scanner.vala:1683: Scanner.scan
> ("escl:http://127.0.0.1:6;, dpi=150, scan_mode=ScanMode.GRAY, depth=2,
> type=single, paper_width=0, paper_height=0, brightness=0, contrast=0,
> delay=3000ms)
> [+20.83s] DEBUG: scanner.vala:828: Processing request
> [+20.83s] DEBUG: scanner.vala:889: sane_open ("escl:http://127.0.0.1:6;)
> -> SANE_STATUS_NO_MEM
> [+20.83s] WARNING: scanner.vala:893: Unable to open device: Out of memory
Nothing about the pixma backend (driver)?
> I'm not sure what could be going on, as I have a ton of memory on my
> system.
Just to confirm your experience, what happens with scanning with
simple-scan "pixma:04A91913_47A8A4"
and
simple-scan "escl:http://127.0.0.1:6;
> I don't know why I tried this, but I then ran simple-scan as root,
> and...it worked perfectly.
I do not understand why this should be so. Do both the previous commands
work as root?
> I'm bewildered by this--any idea what I should be looking at?
Yes; there is a possible solution. Give what you get for
lsusb -v | grep -A 3 bInterfaceClass.*7
and
systemctl list-units "ipp-usb*" | grep service
--
Brian.
Re: simple-scan fails with Canon LiDE 300--except as root
-BEGIN PGP SIGNED MESSAGE- Hash: SHA256 ‐‐‐ Original Message ‐‐‐ On Friday, January 8, 2021 10:28 PM, Jen Nussbaum wrote: > I don't know why I tried this, but I then ran simple-scan as root, and...it > worked perfectly. I had a similar problem with vim -- I have no idea what was wrong. I fixed it with a line in .bashrc: alias vi="sudo vi" (I was already in /etc/sudoers with a no password login). Not the most elegant solution, but it saved a lot of time, and it works... -- Glenn English -BEGIN PGP SIGNATURE- Version: ProtonMail wsBzBAEBCAAGBQJf+OjNACEJEJ/XhjGCrIwyFiEELKJzD0JScCVjQA2Xn9eG MYKsjDKpoAgAn6FUbE4JjUwBQdtPLBjcW/uaylna8B/OzLIiMNf7okVs0ExH uutXA5d9gXp/0woFHyD/bCnkCaFAJQd8HzXzUzS7i4vnqYonh8VCsiJLMD8+ 2tL/dRPNSAFlzXWB3SFleGxUnwFUETeBo9v3cJkfVjUSGcE6+cWx1xLZPVAa TjP2khdYCQTwCQ1gcTCkSGOmFY8yehM/swuHJBL5eiGSlRTcZ/XHHE89nhys G0ssWy+zgmazb0A/SWsThGStHcWh9gRdpSI5/EUuK3aX/661WEdQKcdUbIVM NSENL87rvqDK83UjDFt+3Qy6RtzlJIFvRyC3nOxs+84KPzmeiTM8JQ== =zJwX -END PGP SIGNATURE-
Re: simple-scan fails with Canon LiDE 300--except as root
On 08/01/2021 22:39, Dr. Jennifer Nussbaum wrote:
After using a rather old Canon scanner for many years, I recently
upgraded to the Canon LiDE 300,
and installed the drivers as directed, on a Bullseye system (10.2.0-17).
The printer is recognized:
$ scanimage -L
device `pixma:04A91913_47A8A4' is a CANON CanoScan LiDE 300
multi-function peripheral
device `escl:http://127.0.0.1:6' is a Canon LiDE 300 (USB) flatbed
scanner
When I run simple-scan, it detects the printer and announces itself
ready to go, but when I try
to scan anything, I get the message "Failed to scan Unable to connect
to scanner". I Googled for
anything related to this; there's a bunch of stuff on Ubuntu and Mint
forums about purging the
"ippusbxd" package, but this isn't on Debian.
I then ran simple-scan with the debug flag, and at the moment I try to
initiate a scan, I got:
[+20.83s] DEBUG: simple-scan.vala:1817: Requesting scan at 150 dpi
from device
'escl:http://127.0.0.1:6'
[+20.83s] DEBUG: scanner.vala:1683: Scanner.scan
("escl:http://127.0.0.1:6;, dpi=150,
scan_mode=ScanMode.GRAY, depth=2, type=single, paper_width=0,
paper_height=0, brightness=0,
contrast=0, delay=3000ms)
[+20.83s] DEBUG: scanner.vala:828: Processing request
[+20.83s] DEBUG: scanner.vala:889: sane_open
("escl:http://127.0.0.1:6;) ->
SANE_STATUS_NO_MEM
[+20.83s] WARNING: scanner.vala:893: Unable to open device: Out of memory
I'm not sure what could be going on, as I have a ton of memory on my
system.
I don't know why I tried this, but I then ran simple-scan as root,
and...it worked perfectly.
I'm bewildered by this--any idea what I should be looking at?
If something works as root, but not as a standard user, it's usually
permissions. Is the user a member of the correct groups etc?
--
Michael Howard
simple-scan fails with Canon LiDE 300--except as root
After using a rather old Canon scanner for many years, I recently upgraded to
the Canon LiDE 300,and installed the drivers as directed, on a Bullseye system
(10.2.0-17).
The printer is recognized:
$ scanimage -Ldevice `pixma:04A91913_47A8A4' is a CANON CanoScan LiDE 300
multi-function peripheraldevice `escl:http://127.0.0.1:6' is a Canon LiDE
300 (USB) flatbed scanner
When I run simple-scan, it detects the printer and announces itself ready to
go, but when I tryto scan anything, I get the message "Failed to scan Unable to
connect to scanner". I Googled foranything related to this; there's a bunch of
stuff on Ubuntu and Mint forums about purging the"ippusbxd" package, but this
isn't on Debian.
I then ran simple-scan with the debug flag, and at the moment I try to initiate
a scan, I got:
[+20.83s] DEBUG: simple-scan.vala:1817: Requesting scan at 150 dpi from
device'escl:http://127.0.0.1:6'[+20.83s] DEBUG: scanner.vala:1683:
Scanner.scan ("escl:http://127.0.0.1:6;, dpi=150,scan_mode=ScanMode.GRAY,
depth=2, type=single, paper_width=0, paper_height=0, brightness=0,contrast=0,
delay=3000ms)[+20.83s] DEBUG: scanner.vala:828: Processing request[+20.83s]
DEBUG: scanner.vala:889: sane_open ("escl:http://127.0.0.1:6;)
->SANE_STATUS_NO_MEM[+20.83s] WARNING: scanner.vala:893: Unable to open device:
Out of memory
I'm not sure what could be going on, as I have a ton of memory on my system.
I don't know why I tried this, but I then ran simple-scan as root, and...it
worked perfectly.
I'm bewildered by this--any idea what I should be looking at?
