madvinegar wrote:If you decide to install linux on an external USB HDD you will be surprised because you will not notice any delay or problems. It would be like you have installed it on your internal hard drive (especially if your external drive and laptop support USB3). It is a great solution for not messing with your computer that runs win8 etc. Don't forget to install the grub menu on the external HDD.
As regards your problem my mind goes to two factors.
i) Maybe as you installed and prepared the USB in another computer and also run the updates on it, some changes may have been made as hardware specific of the other computer.
ii) It may just be a matter of installing a repository or drivers for your card. Can you please post back the result of the following command just to see what your card is and what driver is using:
lspci -nnk | grep -iA2 vga
The problem is that if we mess with the drivers for the problematic computer, it may not work well in the other PCs...
Also, have you tried running the session with no effects? To do so log out, click on the Zorin round logo (the Z button) and select "zorin no effects".
Thanks for those further thoughts, madvinegar. Taking them in order.....
1)
installing Linux on an external HDD. I'm ahead of you, and for exactly the reasons you mention. I have installed PCLinuxOS (but NOT yet Zorin) on an external HDD - with its grub also on the HDD so as not to mess with the Windows MBR on my computer. Yes, it's faster than running from a USB stick. There is a little glitch over wifi, but that's not for this forum. I'd like to put Zorin on to that same HDD, but this raises some challenges over how to "program" grub (PCLinux uses legacy grub, while I think Zorin uses grub2?). But all that is perhaps for a separate thread in due course - because I will certainly need detailed advice on how to install Zorin alongside PCLinuxOS and how to get their respective grubs to see each other and play nicely together.....
2) meanwhile, as regards
the Zorin install on my USB stick, I did, as you suspect in your point (i), do the installation using another laptop (a Dell) . So during the installation or when I subsequently updated it, the Zorin installer/updater may have "tuned" the package to suit that laptop - with the result that the buttons don't appear on my older Compaq laptop possibly because it has a different graphics card?
3)
installing new drivers. I haven't yet run the command you suggest to reveal what card or driver(s) the Compaq may have, but will do so. Just a quick clarification: do I need to run that command as "root" or can I do it from the normal terminal? As you note, however, it may not be a great idea to mess with the drivers simply in order to enable the USB-stick Zorin to run on the problematic Compaq laptop, if the price of that is that it no longer runs properly on my other machines!
Incidentally Henriolavi is strictly speaking correct to point out that ideally a full install to a USB drive is best done on, and for, the specific computer on which it is intended to run. My aim (or my experiment) was to see if I could install a Linux OS on to a USB stick (or external drive) precisely so that I could then use it "portably" and run it on whichever different machine I chose rather than having to do separate installs on each computer (or separate installs on separate USB sticks for each!)
4) I haven't tried
the "no effects" option either, but when I have a moment I might try that, as presumably it makes no permanent changes and can be easily undone?