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#1 2012-01-19 20:21:55

2beers
Member
From: 127.0.0.1
Registered: 2009-05-27
Posts: 24

Intel: KMS not working after update to Kernel 3.2.1

Hey guys,

I did an update to the newest kernel version on my Thinkpad L520 today. Unfortunately, after a reboot I just get a blank screen when the system switches to the native display resolution via KMS. I added "i915" to my initramfs according to https://wiki.archlinux.org/index.php/In … modules.22 and disabled rc6 as well. Neither of this did solve the problem. sad Is there anyone with similar issues or an idea on how to fix it?

My graphics chip is an Intel HD 3000 (lspci: 00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09)) and I am using the most recent packages as of today.

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#2 2012-01-19 20:25:14

karol
Archivist
Registered: 2009-05-06
Posts: 25,427

Re: Intel: KMS not working after update to Kernel 3.2.1

It's working fine on

[karol@black ~]$ lspci | grep VGA
00:02.0 VGA compatible controller: Intel Corporation 82845G/GL[Brookdale-G]/GE Chipset Integrated Graphics Device (rev 01)

but obviously it's a bit different hardware :-)


Does disabling KMS fix it?

Last edited by karol (2012-01-19 20:25:37)

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#3 2012-01-19 20:29:56

2beers
Member
From: 127.0.0.1
Registered: 2009-05-27
Posts: 24

Re: Intel: KMS not working after update to Kernel 3.2.1

The "Intel" wiki article says: "Versions 2.10 and newer of the xf86-video-intel driver no longer support UMS, making the use of KMS mandatory.". That made me assume that there is no way to disable KMS with my setup.

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#4 2012-01-19 20:41:42

karol
Archivist
Registered: 2009-05-06
Posts: 25,427

Re: Intel: KMS not working after update to Kernel 3.2.1

I think you need KMS for X, but not for the console but I don't remember checking it.

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#5 2012-01-19 20:41:55

Gusar
Member
Registered: 2009-08-25
Posts: 3,431

Re: Intel: KMS not working after update to Kernel 3.2.1

2beers wrote:

That made me assume that there is no way to disable KMS with my setup.

There is, but X won't work if you do it.

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#6 2012-01-19 20:43:35

karol
Archivist
Registered: 2009-05-06
Posts: 25,427

Re: Intel: KMS not working after update to Kernel 3.2.1

I just want to make sure it's KMS-related.

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#7 2012-01-20 06:19:39

2beers
Member
From: 127.0.0.1
Registered: 2009-05-27
Posts: 24

Re: Intel: KMS not working after update to Kernel 3.2.1

Yes, it is definitely KMS-related. I disabled KMS via i915.modeset=0 and now I am back in my system (console and GNOME 3 fallback mode for now). Are there any ideas on how to make KMS work again..?

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#8 2012-01-20 13:07:23

i_love_penguins
Member
From: Germany
Registered: 2010-03-30
Posts: 46
Website

Re: Intel: KMS not working after update to Kernel 3.2.1

I got the same problem with my L520, too.

Actually I can get graphical output on my external VGA display. The Laptop display itself is not working. This seems to be a kernel bug introduced in the recent 3.2 Kernel.
There is already a fix for this. I hope it gets pushed to one of the next releases.

Also see:

http://comments.gmane.org/gmane.comp.fr … intel/7963

and

http://groups.google.com/group/linux.ge … 0?lnk=raot

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#9 2012-01-20 15:27:49

2beers
Member
From: 127.0.0.1
Registered: 2009-05-27
Posts: 24

Re: Intel: KMS not working after update to Kernel 3.2.1

So, I guess i'll be waiting for a new kernel release then...

Right now a downgrade to 3.1.9 fixed the KMS annoyance.

*spelling

Last edited by 2beers (2012-01-20 15:28:14)

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#10 2012-01-20 17:38:02

i_love_penguins
Member
From: Germany
Registered: 2010-03-30
Posts: 46
Website

Re: Intel: KMS not working after update to Kernel 3.2.1

2beers wrote:

Right now a downgrade to 3.1.9 fixed the KMS annoyance.

That's what I did. And yes, it's annoying but imagine we wouldn't even have the possibility of downgrading. Given the fact of always having the latest software on my computer, we (have to)accept that smile

So let's grab 2 (plus x) beers and wait wink

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#11 2012-01-20 17:44:54

karol
Archivist
Registered: 2009-05-06
Posts: 25,427

Re: Intel: KMS not working after update to Kernel 3.2.1

Arch Linux - rolling release distro, where people are wanting to downgrade to a previous version

Found here: https://bbs.archlinux.org/profile.php?id=34421

Last edited by karol (2012-01-20 17:45:12)

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#12 2012-01-21 23:45:57

PUE
Member
From: Earth/Europe/Austria
Registered: 2009-05-09
Posts: 34

Re: Intel: KMS not working after update to Kernel 3.2.1

Same laptop, same problem, let's hope this will be fixed soon.

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#13 2012-01-24 14:53:31

veljom
Member
From: Belgrade, Serbia
Registered: 2011-01-26
Posts: 10

Re: Intel: KMS not working after update to Kernel 3.2.1

I also have the same problem, Lenovo L420, mine boots with i915.modeset=0, but unfortunately with wrong resolution.  Did all of you downgrade?

And as I never downgraded, whats the best way to do it?

Last edited by veljom (2012-01-24 14:54:41)


Kiss

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#14 2012-01-24 14:58:51

2beers
Member
From: 127.0.0.1
Registered: 2009-05-27
Posts: 24

Re: Intel: KMS not working after update to Kernel 3.2.1

veljom wrote:

And as I never downgraded, whats the best way to do it?

I just took the package for the most recent version of Kernel 3.1 out of /var/cache/pacman/pkg and installed it with pacman -U. With my setup I had to remove virtualbox before but apart from that it was quite unproblematic.

For more information you can also refer to the corresponding wiki article at https://wiki.archlinux.org/index.php/Downgrade

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#15 2012-01-24 15:03:48

veljom
Member
From: Belgrade, Serbia
Registered: 2011-01-26
Posts: 10

Re: Intel: KMS not working after update to Kernel 3.2.1

Thanks, 2beers, I tried, but I get this error


pacman -U /var/cache/pacman/pkg/kernel26-2.6.39.3-1-i686.pkg.tar.xz
loading packages...
resolving dependencies...
looking for inter-conflicts...
:: kernel26 and linux are in conflict. Remove linux? [y/N] y

Targets (2): linux-3.2.1-2  kernel26-2.6.39.3-1

Total Installed Size:   53.29 MiB
Net Upgrade Size:       -3.77 MiB

Proceed with installation? [Y/n] y
(1/1) checking package integrity                             [################################] 100%
(1/1) loading package files                                  [################################] 100%
(1/1) checking for file conflicts                            [################################] 100%
error: failed to commit transaction (conflicting files)
kernel26: /boot/vmlinuz26 exists in filesystem
Errors occurred, no packages were upgraded.


Kiss

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#16 2012-01-24 15:05:19

karol
Archivist
Registered: 2009-05-06
Posts: 25,427

Re: Intel: KMS not working after update to Kernel 3.2.1

You should try some more recent kernel, like linux 3.something.

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#17 2012-01-24 15:11:01

veljom
Member
From: Belgrade, Serbia
Registered: 2011-01-26
Posts: 10

Re: Intel: KMS not working after update to Kernel 3.2.1

Thanks, I was looking for "kernel" and not "linux" in /var/cache/pacman/pkg/. 

Did it now, lets see will it work smile


Kiss

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#18 2012-01-24 15:17:45

veljom
Member
From: Belgrade, Serbia
Registered: 2011-01-26
Posts: 10

Re: Intel: KMS not working after update to Kernel 3.2.1

Everything works fine after downgrade, thank you all so much, its great community here. 

And everyday you can learn something new here.


Kiss

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#19 2012-01-27 09:41:50

2beers
Member
From: 127.0.0.1
Registered: 2009-05-27
Posts: 24

Re: Intel: KMS not working after update to Kernel 3.2.1

I just tried Kernel 3.2.2-1.

It's not safe to upgrade yet... sad

Last edited by 2beers (2012-01-27 09:42:12)

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#20 2012-01-30 07:29:35

xyz
Member
Registered: 2012-01-21
Posts: 1

Re: Intel: KMS not working after update to Kernel 3.2.1

The patch is submitted to the 3.2.3 source

Last edited by xyz (2012-01-30 07:32:35)

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#21 2012-01-31 02:57:18

umaxtu
Member
Registered: 2010-11-21
Posts: 27

Re: Intel: KMS not working after update to Kernel 3.2.1

I'm going to chime in real quick.  I'm having the exact same problem but I have a Radeon HD 6870 and I'm using xf86-video-ati. I hadn't realized it started acting up right after I updated the kernel until I saw this thread. I'll post some more detail tommarow (On my laptop right now)

Should I create a new thread since this is different hardware?

Edit: I created my own thread

Last edited by umaxtu (2012-01-31 13:32:58)

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#22 2012-02-14 19:58:04

zauser
Member
Registered: 2012-02-14
Posts: 4

Re: Intel: KMS not working after update to Kernel 3.2.1

I just tried Kernel 3.2.5-1, but it is NOT safe to upgrade! So it seems that the patch isn't submitted. Does it works for you?

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#23 2012-02-14 20:07:25

Gusar
Member
Registered: 2009-08-25
Posts: 3,431

Re: Intel: KMS not working after update to Kernel 3.2.1

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#24 2012-02-15 21:54:00

Martin90
Member
Registered: 2012-02-04
Posts: 2

Re: Intel: KMS not working after update to Kernel 3.2.1

Gusar wrote:

Hi,

I have exactly the same problem. Can you tell me how to apply this patch? I'm just new to Arch Linux and don't know how to do this unfortunately.

Thanks in advance.

Martin

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#25 2012-02-15 21:58:44

karol
Archivist
Registered: 2009-05-06
Posts: 25,427

Re: Intel: KMS not working after update to Kernel 3.2.1

@Martin90
Check how other patches are applied: http://projects.archlinux.org/svntogit/ … ages/linux


@Gusar
Is there a PKGBUILD with this patch?

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