Bug 494406

Summary:	sys-kernel/gentoo-sources-3.12.5 efi stub does not boot
Product:	Gentoo Linux	Reporter:	Stefan de Konink <stefan>
Component:	[OLD] Core system	Assignee:	Gentoo Kernel Bug Wranglers and Kernel Maintainers <kernel>
Status:	RESOLVED WORKSFORME
Severity:	normal
Priority:	Normal
Version:	unspecified
Hardware:	All
OS:	Linux
Whiteboard:
Package list:		Runtime testing required:	---
Attachments:	Kernel config emerge --info kernel config Crash with other kernel configuration This is the secondary crash

Description Stefan de Konink 2013-12-16 01:13:13 UTC

I have just made an attempt to upgrade from gentoo-sources-3.12.1. I have used the same configuration and the diff shows only:

-# Linux/x86 3.12.1-gentoo Kernel Configuration
+# Linux/x86 3.12.5-gentoo Kernel Configuration

The new bzImage is copied to /boot/efi/boot/bootx64.efi, its hash is added to the database but rebooting hangs after the black curtains of the EFI-enabled bios.

Falling back to the previous kernel seems to work.

The platform is AMD A4-1200 APU with Radeon(TM) HD Graphics.

Reproducible: Always

Comment 1 Stefan de Konink 2013-12-16 01:13:30 UTC

Created attachment 365452 [details]
Kernel config

Comment 2 Stefan de Konink 2013-12-16 01:14:12 UTC

Created attachment 365454 [details]
emerge --info

Comment 3 Stefan de Konink 2013-12-22 18:13:43 UTC

I can also confirm that 3.12.4-gentoo works.

Comment 4 Christian Tietz 2013-12-25 22:31:48 UTC

I have been running every kernel from the 3.12 branch since 3.12.1 booting via EFI stub, however, I didn‘t encounter this issue at all.

My platform is ASUS F2A85-V plugged with AMD A10-6700 APU.

Comment 5 Christian Tietz 2013-12-25 22:37:53 UTC

Created attachment 366196 [details]
kernel config

Sorry, I forgot to attach my kernel config.

Comment 6 Stefan de Konink 2014-01-21 13:42:30 UTC

To update this issue also gentoo-sources-3.13 doesn't boot. I'm going to try the configuration of Christian.

Comment 7 Stefan de Konink 2014-01-21 15:08:38 UTC

Created attachment 368334 [details]
Crash with other kernel configuration

I get this error with the other kernel configuration.

This results in a reboot, which is every interesting with another crash (don't know where it comes from).

Comment 8 Stefan de Konink 2014-01-21 15:09:19 UTC

Created attachment 368336 [details]
This is the secondary crash

Comment 9 Stefan de Konink 2014-01-21 17:01:26 UTC

Should have checked this ages ago. If I remove the radeondrm stuff from my kernel configuration (it was a module). The system boots normally. Now I would need to find an expert that could tell me what is so special about this machine.

Comment 10 Stefan de Konink 2014-01-21 17:53:35 UTC

Problem is suddenly solved, after compiling without radeondrm, and enabling it again. Only relevant addition in .config seems:

CONFIG_DRM_KMS_FB_HELPER=y