Re: Fun with upgrades - not

[Phil Holmes]

----- Original Message ----- 
From: "Alexander Kobel" <address@hidden>
To: "Phil Holmes" <address@hidden>; <address@hidden>
Sent: Wednesday, June 29, 2016 4:42 PM
Subject: Re: Fun with upgrades - not


> Hi Phil,
>
> I had a bit of trouble to parse your setup description. IIUC, you used to 
> have a machine with
>
> - Ubuntu 10.04 running natively as host
>   - VirtualBox environment on this one
>     - LilyDev/Ubuntu 12.04 VM
>     - Windows Vista VM
>     - Windows 7 VM

No Vista VM - that's a real PC.  Otherwise correct.

> and want to go to
>
> - Ubuntu 14.04. running natively as host
>   - VirtualBox environment on this one
>     - possibly a LilyDev/Ubuntu 12.04 VM ?
>     - Windows Vista VM
>     - Windows 7 VM
>
> Correct? Or will you just install a Win7 on your shiny new piece of 
> hardware and keep Ubuntu on the old one?

I did want to use a Win7 VM, but will now not do so - I 'll use my new PC 
when it arrives.  As before - no Vista - just the Ubuntu VM for my GUB 
environment.

> W.r.t. the mountpoints, have a look at
>
> http://askubuntu.com/questions/336518/why-has-ubuntu-moved-the-default-mount-points#336580
> for an explanation and
>
> http://askubuntu.com/questions/214646/how-to-configure-the-default-automount-location/276670#276670
> for a way to go back to the pre-10.10-behavior (untested though, I'm quite 
> happy with the new behavior on Arch Linux here).
> That different users cannot access the drive with the new default is the 
> intended feature, not a bug, though it might come unexpected.
>
> For a quick-and-dirty solution, you can check whether symlinks (con: not a 
> "proper" directory; pro: simple and persistent over reboots) or 
> bind-mounts (pro: proper directory; con: more difficult to setup, in 
> particular if you want them for automounted drives) serve the same 
> purpose. Also, mounting a device multiple times as Wol suggested is no 
> problem at all.

Thanks.  Will check that out if needed.

> Finding out why the VM became slow sounds difficult. I am a VirtualBox 
> user, too, but never experienced severe problems - on the other hand, I 
> basically use it once a year for the tax declaration, and even less often 
> to buy sheet music on sites which ship Scorch files. In contrast, 
> Lightroom sounds like an application that might be interested in direct 
> access to the graphics hardware. I assume that there comes a newer 
> VirtualBox with 14.04 than the one on 10.04; I suggest to double-check 
> whether there is a setting that enables or disables GPU support and/or PCI 
> passthrough. The explanations here
>
> https://blogs.oracle.com/fatbloke/entry/3d_acceleration_with_ubuntu_guests
> might still be valid (don't miss out on the vboxvideo module part, could 
> be important...).

Thanks again.  I did conclude that the problem with LightRoom was probably 
GPU related, since it's a fairly sophisticated graphics package.

--
Phil Holmes