PDA

View Full Version : USB Stick boot issues with UEFI or BIOS


mellon85
March 18th, 2015, 08:44 AM
I have tried installing Ubuntu 14.04.2 and 14.10

Gygabyte motherboard
12GB Ram
Radeon R9 270x
D-Link 556

The system just doesn't book.. if I try in legacy mode I get a black screen with this repeating..

gfxboot.c32: Not a COM32R image
boot:


and in UEFI mode I can only stare at the pinks loading screen with some occasional hard drive access.
Between tries I also trie with another distribution (Fedora 21) and that works immidiately instead :s
sudodus
March 18th, 2015, 08:49 AM
gfxboot.c32: Not a COM32R image

indicates a known bug with Unetbootin and the Ubuntu Startup Disk Creator (and maybe some other similar tools). Please use mkusb (https://help.ubuntu.com/community/mkusb) in linux or Win32 Disk Imager (https://wiki.ubuntu.com/Win32DiskImager/iso2usb) in Windows in order to install/copy/flash the iso file into the pendrive.
plucky
March 18th, 2015, 10:39 AM
gfxboot.c32: Not a COM32R image
boot:

Also type help at the prompt will give you options to continue the boot.

Good Luck
mellon85
March 18th, 2015, 06:31 PM
indicates a known bug with Unetbootin and the Ubuntu Startup Disk Creator (and maybe some other similar tools). Please use mkusb (https://help.ubuntu.com/community/mkusb) in linux or Win32 Disk Imager (https://wiki.ubuntu.com/Win32DiskImager/iso2usb) in Windows in order to install/copy/flash the iso file into the pendrive.

I tried with both softwares to generate the USB key.. but nothing works.

In the end I resorted to burn a DVD and try to boot from it, and it booted, but unfortunately nothing from USB works.
I get the error
usb 1-1: device descriptor read/64, error -32

repeated a lot in dmesg, and no mouse or anything working... and in fact I noticed that even fedora can't access my xbox controller (but can access my mouse)... but ubuntu instead just doesn't access any USB device.. while windows works fine :s
sudodus
March 18th, 2015, 06:42 PM
You might need some boot options (https://help.ubuntu.com/community/BootOptions), for example nomodeset, and then install a proprietary driver for the radeon card.

You can also try to boot after unplugging all USB devices.
oldfred
March 18th, 2015, 08:34 PM
You mentioned Gigabyte Motherboard.
They all seem to have IOMMU settings that must be changed from default and/or need boot parameter for IOMMU.

GIGABYTE GA-970A-DS3 motherboard not working with 64 bit kernel - IOMMU
http://ubuntuforums.org/showthread.php?t=2111223&page=5

Sabertooth 990FX: Easy solution to get IOMMU working on mobos with broken BIOSes.
http://ubuntuforums.org/showthread.php?t=2254677

Others with different models all Gigabyte have reported the IOMMU issue.
mellon85
March 19th, 2015, 12:17 PM
I'll try playing around with the IOMMU today, thanks for the help! Probably it was just that.. something I would have never thought about
mellon85
March 20th, 2015, 09:45 AM
I won't probably buy another Gigabyte :D (I have a 990FXA UD3 rev4.0 without the beta bios installed)
the first post solved the issue of mine, even though I can leave the IOMMU enabled and everything works, but as read from the post it may explain why Windows was freezing sometimes and now it stopped


You mentioned Gigabyte Motherboard.
They all seem to have IOMMU settings that must be changed from default and/or need boot parameter for IOMMU.

GIGABYTE GA-970A-DS3 motherboard not working with 64 bit kernel - IOMMU
http://ubuntuforums.org/showthread.php?t=2111223&page=5

Sabertooth 990FX: Easy solution to get IOMMU working on mobos with broken BIOSes.
http://ubuntuforums.org/showthread.php?t=2254677

Others with different models all Gigabyte have reported the IOMMU issue.