marcioasjrestudo
(usa XUbuntu)
Enviado em 16/06/2016 - 16:58h
3. Black screen
or
"you need to load kernel first" and "can not read file/cd0" errors
when installing to an UEFI capable machine:
Ubuntu's installer 'when attempting to run in UEFI mode) will hang and stop due to different manufacturer's implementations of the UEFI specification and will hang in different ways. To identify if your machine is booting in installer UEFI mode you will see
enter image description here
REF: UEFI Community Ubuntu Documentation Section 2.4
If your machine is CSM capable (which is a full UEFI implementation with an emulated BIOS layer) after selecting any option from the grub list the system will hang at a black screen.
The picture above actually only confirms your DVD/USB booted using UEFI and there will be some means in firmware settings to ensure drives are booted in order to make the UEFI installer run (a solution may possibly be as simple as ensuring SATA is set to AHCI) - check your vendors manual! Also check the UEFI Community Documentation Section 2.3 for more details.
What you need to do first is to disable SECURE BOOT in the firmware settings. If that does not get the Ubuntu installer running, try disabling anything mentioning UEFI in the firmware settings. Or
If you cannot find UEFI settings then enable CSM - this will disable the UEFI booting of the installer and then allow a legacy/BIOS install of Ubuntu.
Installing grub-efi afterwards will allow UEFI to be re-enabled. Again refer to UEFI Community Ubuntu Documentation at Section 4
Some machines use a full BIOS with an emulated UEFI layer which may throw errors as described ie "you need to load the kernel first" and "can not read file/cd0"
Not all of these machines implement Secure Boot. Simply selecting UEFI in the BIOS settings will configure UEFI mode on hard drives. There is no solution for these errors and the workaround is to disable UEFI to enable the Ubuntu installer to run in legacy mode; after which boot-repair can be used to install grub-efi which then allows/needs UEFI switched back on before Ubuntu will boot using UEFI. Once again refer to the UEFI Community Ubuntu Documentation at Section 4
Black/purple screen after you boot Ubuntu for the first time
This usually happens because you have an Nvidia or AMD graphics card, or a laptop with Optimus or switchable/hybrid graphics, and Ubuntu does not have the proprietary drivers installed to allow it to work with these.
The solution is to boot Ubuntu once in nomodeset mode (your screen may look weird) to bypass the black screen, download and install the drivers, and then reboot to fix it for ever.
Start your computer, and press the Right Shift when booting up, to get the Grub menu. Use the ← ↑ → ↓ keys to navigate/highlight the entry you want (usually the first one).
enter image description here
Press e to edit that entry, which will show you the details:
enter image description here
Find the linux entry as shown above, use the ← ↑ → ↓ keys to get to it, and then press the End key to get to that line's end (which may be on the next line!).
meu computador ta nesta parte ai, fiz esse procedimento, mas continua a tela preta... acabei de testar em outro notebook o pendrive , funciona normal, isso pode ser alguma coisa do win10 ou da bios ? pq nao tenho interesse em deixar o win10, so queria o Ubuntu mesmo. Se tiver outra configuracao que possa fazer.
