simple scan epson

Ralf Mardorf silver.bullet at zoho.com
Sat Nov 3 07:51:29 UTC 2018


On Sat, 3 Nov 2018 07:03:14 +0100, chris+ubuntu at postbox.xyz wrote:
>Ralf Mardorf via ubuntu-users wrote:
>> The hardware is not accessed by the guest directly, it's the host
>> that communicates to the hardware in the first place.  
>
>I'm forwarding the USB ports.

If a driver should be needed, it would still be the host that needs to
provide the driver. Btw. it doesn't harm to mention what VM you are
using and the host's operating system, since especially USB support is
fishy when using some (at least one) VM/s. If you should use
VirtualBox, I wouldn't be surprised if you run into an USB issue, even
if it shouldn't be a driver issue.

A lot of VirtualBox USB users now will disagree, since a lot of USB
gear works without issues via a VirtualBox USB bridge. Indeed, the
VirtualBox's bridge works for most of the gear I'm using, too, but it
has several weak points. One of the weak points I've got on hand, if a
device should disconnect and reconnect to the host for what ever reason,
the bridge to the host needs to be manually reconnected, the bridge
isn't automatically established. This happens, if you e.g. update the
operating system of a connected USB device via an app, running on the
guest.

On Sat, 3 Nov 2018 07:04:58 +0100, chris+ubuntu at postbox.xyz wrote:
>Brian wrote:
>> We assume your device is USB-connected. What does
>> 
>>   sane-find-scanner
>> 
>> give?  
>
>It is USB connected. XSane is working fine, but I prefer Simple Scan.

Again, USB of at least VirtualBox is tricky. It might work with some
software, but could fail when using other software. It's said that such
issues don't happen, when using a kernel-based virtualization.




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