Re: [gentoo-user] black console w/ 3.2.0-rc7

[Stefan G. Weichinger]

Am 2012-01-06 20:53, schrieb Johannes Kimmel:

> try to disable intel hardware iommu, if you have it selected.

Unfortunately no:

# grep -i iomm .config
# CONFIG_CALGARY_IOMMU is not set
CONFIG_IOMMU_HELPER=y
CONFIG_IOMMU_SUPPORT=y
# CONFIG_AMD_IOMMU is not set
# CONFIG_INTEL_IOMMU is not set
# CONFIG_IOMMU_STRESS is not set

Thanks for your suggestion, Stefan

Re: [gentoo-user] black console w/ 3.2.0-rc7

[Johannes Kimmel]

On 12/29/2011 04:32 PM, Stefan G. Weichinger wrote:


Very likely a FAQ but I can't find it right now:

wanted to try linux 3.2.0-rc7 (by emerging git-sources) ... used my old
config and it built OK.

It also boots OK but very soon it gets simply black, no console, no xdm.

I am able to ssh into it, can't find anything obvious.
framebuffer stuff?

This is my thinkpad L520, with intel graphics.

Does someone has a pointer for me?

Thanks, Stefan




I had a similar problem. I had selected the intel hardware iommu as 
default. This caused my X to completely stay black. Systemlog showed 
something about dma and drna (if i remember correctly).


try to disable intel hardware iommu, if you have it selected.

Re: [gentoo-user] black console w/ 3.2.0-rc7

[Stefan G. Weichinger]

Am 05.01.2012 11:12, schrieb Stefan G. Weichinger:
> Am 29.12.2011 16:48, schrieb Stefan G. Weichinger:
> 
>> Digging further ...
> 
> same behavior with gentoo-sources-3.2.0
> 
> Will check now on desktop, nvidia there (and not intel graphics).

works fine there, so it seems related to intel graphics .. ?
"noacpi" and disabling that RC6-powersaving-stuff didn't help so far.

Re: [gentoo-user] black console w/ 3.2.0-rc7

[Stefan G. Weichinger]

Am 29.12.2011 16:48, schrieb Stefan G. Weichinger:

> Digging further ...

same behavior with gentoo-sources-3.2.0

Will check now on desktop, nvidia there (and not intel graphics).

Re: [gentoo-user] black console w/ 3.2.0-rc7

[Stefan G. Weichinger]

Am 29.12.2011 16:32, schrieb Stefan G. Weichinger:
> 
> Very likely a FAQ but I can't find it right now:
> 
> wanted to try linux 3.2.0-rc7 (by emerging git-sources) ... used my old
> config and it built OK.
> 
> It also boots OK but very soon it gets simply black, no console, no xdm.
> 
> I am able to ssh into it, can't find anything obvious.
> framebuffer stuff?

kernel-parameter "nomodeset" brought me a console ... no X yet.
Digging further ...

[gentoo-user] black console w/ 3.2.0-rc7

[Stefan G. Weichinger]

Very likely a FAQ but I can't find it right now:

wanted to try linux 3.2.0-rc7 (by emerging git-sources) ... used my old
config and it built OK.

It also boots OK but very soon it gets simply black, no console, no xdm.

I am able to ssh into it, can't find anything obvious.
framebuffer stuff?

This is my thinkpad L520, with intel graphics.

Does someone has a pointer for me?

Thanks, Stefan