Just signed on to your board. Looks good, and I hope this is a new subject.
I recently installed Ubuntu Mate 16.04 on my girlfriends’s ancient Toshiba laptop. Yesterday I was scanning a number of .pdf’s using Simple Scan. Simple Scan showed all of the new .pdf’s as they were saved, but these were invisible with Caja. Installed Thunar, and no problems-- all of the files were present.
I’m running Linux Mint Mate 17.3 on my home computer and Caja and Simple Scan work perfectly.
Since Thunar installed without problems and everything is visible when I use it, this is really more of a curiosity than a burning question that needs answering immediately. Thunar can be default file manager, doubt if she’d notice the difference.
However, I can’t for the life of me figure out why one file manager would see a file and another would be blind. Any ideas?
BTW- other than this, I love Mate 16.04.
Try refreshing the view in Caja.
Not at her place right now-- freezing rain. However I booted the computer yesterday and Caja was still blind.
This is strange, indeed. One thing I suggest is use a terminal to see exactly what these filenames, owner and permissions are with the command ls -al.
I’m guessing something about how the scanner creates or names the files is involved - but how?
FWIW- This is about a nine year old Toshiba that was marginal when it was bought. I’ve had Ubuntu and Linux Mint Cinnamon on it. Both too heavy.
Tried Peppermint Linux but had a few bugs. Tried Lubuntu which worked well but like the extra slickness of Ubuntu Mate. Noticed no problems with Nemo or PCMan. Really don’t know if I added scans since installing Ubuntu Mate. Who pays attention to whether or not your file manager reads new files if everything’s working OK?
I did install updates yesterday, a few minutes before scanning. Probably not worth spending time on since Thunar installed easily and some would say it’s a bit superior to Caja anyway. More a curiousity than anything else.
Curiosities are good… they often lead to better insight. Great discoveries never start with “Eureka!” - more like “hmmm… that’s odd…”. 
That’s why I’m interested what you find.
1 Like
Should add that I’m sure all earlier scans were visible to Caja and that (I think) I updated my Linux Mint Mate machine within a day of updating her Ubuntu Mate. I only updated three of the five layers on the Linux Mint and of course this is 14.04 based anyway, so wonder if this is some problem at the operating system level of the 16.04 update? Would all Caja updates be the same on both distros?
Will take another look at the files with Caja when I get back over to her place.
And check the file names too. I’m not sure what level of familiarity you have with Linux desktops but just in case: the files that have a name starting with “.” are hidden by default in caja. Hit CTRL+H to hide/unhide them
Will do when I get to her computer although these weren’t the file names. I used Thunar to rename some of the original files, plus copied them to different directories, but will recheck if I get Caja active again. This is more of a “what in hell is going on here?” rather than anything critical as Thunar works just fine.
Hi @csandste,
also try opening Welcome > Software > Fixes and run the command then restart!:
The two commands at the bottom (Broken packages):
I hope it helps!. 
Will take a look at the boutique when I get back over to her computer-- too damn cold today to go out. In the meantime I scanned a file on my Mint Mate 17.03 since I did updates at the same time. Caja sees newly scanned files with no problem.
Just got back from her place. Started scanning test files and had Thunar and Caja both working. No problems today whatsoever. Will fool around with it more this week but something that doesn’t recur is puzzling. I’m not too proud to accept the possibility of operator error, although I repeated a number of different trials where I could find a file with Thunar and not Caja on Friday. Don’t see a speed erosion keeping both Caja and Thunar at the go, but I’m a beginner at this and not sure whether Thunar brings out a lot of unneeded power eating Xfce dependences.
Can’t find a search function on Thunar (probably right in front of me), at this point I prefer Caja if it runs correctly.
Thanks to everyone for responding.
Hi @,
maybe it is being caused by the fact that you have both Thunar and Caja installed, try removing one of them and see what happens?. 
Thunar brings in a dozen or so XFCE support packages but in general, that shouldn’t be a problem.
When I want a file manager that’s lean-and-mean I bring up PCManFM which I always install just for large directories. It doesn’t have the features but is fast at what it does. Performance and features seems to be a trade-off.
2 Likes
Wolfman- I added Thunar because I couldn’t find newly scanned files with Caja.
Bill_M- Will probably uninstall Thunar and use PC_Man FM as a lightweight option. Previously ran Lubuntu on this computer without incident, Still have no idea why those newly scanned files were missing but the most likely cause is I screwed up.
Thanks for all the help on this board.
1 Like
