Binary package hint: nautilus
when external drive is plugged (500 GB Western Digital in my case), it opens a nautilus folder view a few seconds later. The thing is that 500GB disk appears in the nautilus sidebar before it is opened in a new folder view, and if it is clicked to open at this time, it shows an error... the automatic folder view didn't happened yet. It's like there is an time interval in which the device is accesible for the user (can be double clicked to open), but it won't open and will give the error... This error is of DBus error.... see the screenshot. In the screenshot can be seen clearly that the device "VOLKETA" is shown in the sidebar, but the "eject" button next to it, it is not present. and the automatic folder open did not happened yet at the time of the screen shot. When folder opens with the content, the eject button in the sidebar appears to.
Best Regards,
Thank you for taking the time to report this bug and helping to make Ubuntu better. Could you tell me which version of ubuntu you are using? Thank you.