Author: parsec
Subject: J4205-ITX UEFI Mode CSM=off doesn't boot Ubuntu 16
Posted: 30 Dec 2016 at 10:56am
Using Rufus may be part of your problem. I never use it, the default formatting of USB flash drives is fine, at least for installing Windows in UEFI booting (EFI boot loader) mode. The resulting formatting of the OS drive is perfect, GPT and four partitions, for Windows.
I assume you installed Ubuntu from a USB flash drive? If so, did you check the entry in the boot order for the USB flash drive? You must select the entry that is, "UEFI: <flash drive name>", in order for the EFI boot loader to be used, even if CSM is disabled.
When you installed Ubuntu, did you only have the target OS drive installed in the PC? No other drives connected and powered up?
The Intel integrated graphics VBIOS, which is part of the UEFI/BIOS for your board, has supported the UEFI GOP video standard since the Sandy Bridge processor generation. Support for the GOP protocol is necessary for UEFI booting, which many older video cards do not, and cannot support. ASRock has always included the appropriate EFI compatible VBIOS for the Intel graphics, in the UEFI/BIOS for their current and earlier boards, if possible.
If the Intel HD 505 graphics VBIOS (sourced from Intel) did not support GOP, then including the CSM option in the UEFI would be a mistake. I can't believe Intel would not support GOP on one of their latest products, the J4205 processor. The specs for the J4205 include support for Secure Boot, which when enabled will automatically disable CSM. Given that, the HD 505 graphics must support GOP.
Subject: J4205-ITX UEFI Mode CSM=off doesn't boot Ubuntu 16
Posted: 30 Dec 2016 at 10:56am
 Juanjo1982 wrote:I've bought a J4205ITX motherboard because it supports Ubuntu 16.10 but It doesn't load GRUB-EFI if the CSM module is disabled. The boot loader shows the EFI partitions but when you choose it you get a blank screen. You get the same results booting the Ubuntu instalation in a Kingston SSD connected to SATA3 port or the USB made with Rufus (GPT, FAT32, ISO Ubuntu16.10 AMD 64 bits image).I've tried in USB 3.0 and 2.0 porte. The problem seems to be that it freezes before showing the GRUB loader. You can test it with the USB image you get from Rufus. Could it be related to he Intel HD 505 graphics? |
Using Rufus may be part of your problem. I never use it, the default formatting of USB flash drives is fine, at least for installing Windows in UEFI booting (EFI boot loader) mode. The resulting formatting of the OS drive is perfect, GPT and four partitions, for Windows.
I assume you installed Ubuntu from a USB flash drive? If so, did you check the entry in the boot order for the USB flash drive? You must select the entry that is, "UEFI: <flash drive name>", in order for the EFI boot loader to be used, even if CSM is disabled.
When you installed Ubuntu, did you only have the target OS drive installed in the PC? No other drives connected and powered up?
The Intel integrated graphics VBIOS, which is part of the UEFI/BIOS for your board, has supported the UEFI GOP video standard since the Sandy Bridge processor generation. Support for the GOP protocol is necessary for UEFI booting, which many older video cards do not, and cannot support. ASRock has always included the appropriate EFI compatible VBIOS for the Intel graphics, in the UEFI/BIOS for their current and earlier boards, if possible.
If the Intel HD 505 graphics VBIOS (sourced from Intel) did not support GOP, then including the CSM option in the UEFI would be a mistake. I can't believe Intel would not support GOP on one of their latest products, the J4205 processor. The specs for the J4205 include support for Secure Boot, which when enabled will automatically disable CSM. Given that, the HD 505 graphics must support GOP.