Calibre 0.4.56 doesn't recognize Reader

[kovidgoyal]

OK that's just weird. Try doing an uninstall followed by a fresh install.

[rhadin]

I just did the uninstnd reinstall. No change. Calibre doesn't recognize the Reader.

[kovidgoyal]

Hmm I'm stumped. The code I asked you to execute is exactly the code calibre uses to detect the device. If you do

import wmi, pythoncom
pythoncom.CoInitialize()
_wmi = wmi.WMI()
from calibre.devices.scanner import DeviceScanner
from calibre.devices.prs505.driver import PRS505
d = DeviceScanner(_wmi)
d.scan()
d.is_device_connected(PRS505)

and get True and then run

prs500 info

in another terminal you still get device not detected?

[rhadin]

I ran the code as you asked and received a True. I then ran the prs500 info code in another terminal and received the message:

Unable to find PRS505. Is it connected?

The attached JPG shows both screens.

[kovidgoyal]

OK one more test

import wmi, pythoncom
pythoncom.CoInitialize()
_wmi = wmi.WMI()
from calibre.devices.scanner import DeviceScanner
from calibre.devices import devices
ds = DeviceScanner(_wmi)
for d in devices(): print d, scanner.is_device_connected(d)

[rhadin]

This produced the following error message:

NameError: name 'scanner' is not defined

Attached is a JPG showing the results.

[kovidgoyal]

Oops sorry, my fault

import wmi, pythoncom
pythoncom.CoInitialize()
_wmi = wmi.WMI()
from calibre.devices.scanner import DeviceScanner
from calibre.devices import devices
ds = DeviceScanner(_wmi)
for d in devices(): print d, ds.is_device_connected(d)

[rhadin]

No problem. I ran the corrected code and received the following, shown in the attached JPG.

[kovidgoyal]

Hmm, now try this

import wmi, pythoncom
pythoncom.CoInitialize()
_wmi = wmi.WMI()
from calibre.devices.scanner import DeviceScanner
from calibre.devices import devices
ds = DeviceScanner(_wmi)
ds.scan()
for d in devices(): print d, ds.is_device_connected(d)

[rhadin]

Now it finds the Reader as shown in the JPG (the line now reads True). But if I load Calibre, Calibre doesn't recognize the Reader (and I installed the latest version this morning).

[kovidgoyal]

That's just weird, the code above is exactly the code used to detect the reader. Do you have another computer you can try this on?

[rhadin]

I can try it on another computer tomorrow and I'll let you know.

[rhadin]

I tried it this morning on another computer. The computer had an older version of libprs500 on it and the Reader was recognized. I then downloaded the latest version of Calibre and installed it on the computer, and the Reader was recognized. Finally, I uninstalled the libprs500 program and checked again -- and Calibre recognized the Reader. (FWIW, I made sure to use the same USB cable on this computer as I use on my own computer just to keep the variables down.)

I am now going to uninstall Calibre from my computer, reboot, and reinstall with the latest version and see if that makes a difference. I'll let you know if that makes a difference, even though we tried this once before.

[rhadin]

Didn't work. Still doesn't recognize the Reader. Any suggestions?

[pilotbob]

Originally Posted by rhadin

I am now going to uninstall Calibre from my computer, reboot, and reinstall with the latest version and see if that makes a difference. I'll let you know if that makes a difference, even though we tried this once before.

Is this a desktop computer you are having problems with? If so, many of them have USB ports in the front and back. Sometimes the ones in the front work differently, or don't have as much power or something. If you are plugging into the front USB port of a desktop try a port in the back of the machine.

BOb