You are not logged in.

#1 2010-02-25 18:10:19

owain
Member
Registered: 2009-08-24
Posts: 251

Two problems with recent kernels - KMS resolution and fan speed

Two issues have arisen since kernel26-2.6.32-6.  One is that that the boot process and all consoles only use approx. two-thirds of the screen, with the correct console font - as if the resolution is being detected as 800x600 rather than 1440x900.  The other, which may or may not be connected but also cropped up in that upgrade, is that my main laptop fan jumps to 100% speed near the start of booting, and stays there.  Downgrading to 2.6.32-5 solves both problems, which persist through to 2.6.32-9.  (That I normally boot into a custom kernel which I haven't bothered upgrading is why I've not tried to pin down the problem(s) until now.)  Any ideas of what might be going on?  I've got an Aspire 7730 with an Intel Mobile 4 chipset, using i915.

Offline

#2 2010-03-10 22:29:37

owain
Member
Registered: 2009-08-24
Posts: 251

Re: Two problems with recent kernels - KMS resolution and fan speed

Just a bump, to ask if anyone might be able to shed light on this - I've tried the 2.6.33-1 kernel from Testing, and the same problems exist.  I'd open a bug report, but I don't know if I should be reporting one problem or two!

Offline

#3 2010-03-11 00:51:14

Gen2ly
Member
From: Sevierville, TN
Registered: 2009-03-06
Posts: 1,529
Website

Re: Two problems with recent kernels - KMS resolution and fan speed

I'd do two myself owain.  These problems likely aren't related so better to keep them separate so the developers can better debug them.  As for the fan thing, I noticed I got that too.  Not sure if this is normal since I just installed on the laptop, but it remains on, well, when it comes on.  Haven't played with cpufrequtils but I didn't think that would be necessary.  Even when the computer is just sitting here the fan is on.


Setting Up a Scripting Environment | Proud donor to wikipedia - link

Offline

#4 2010-03-11 02:19:26

eldragon
Member
From: Buenos Aires
Registered: 2008-11-18
Posts: 1,029

Re: Two problems with recent kernels - KMS resolution and fan speed

chech if the svideo or tvout is being enabled.

if there are more than one display enabled, the console will take the space of the smallest..

under i915, you have to pass to the kernel: video=VGA-1:off

or whatever the display is.

EDIT

about the fan thing, if you can bisect that and report the commit that actually breaks your fan, they will probably fix it for future versions

Last edited by eldragon (2010-03-11 02:21:35)

Offline

#5 2010-03-11 02:37:07

lilsirecho
Veteran
Registered: 2003-10-24
Posts: 5,000

Re: Two problems with recent kernels - KMS resolution and fan speed

Perhaps you should place "nomodeset" in the grub kernel line to correct the display problem..


Prediction...This year will be a very odd year!
Hard work does not kill people but why risk it: Charlie Mccarthy
A man is not complete until he is married..then..he is finished.
When ALL is lost, what can be found? Even bytes get lonely for a little bit!     X-ray confirms Iam spineless!

Offline

#6 2010-03-11 02:39:43

eldragon
Member
From: Buenos Aires
Registered: 2008-11-18
Posts: 1,029

Re: Two problems with recent kernels - KMS resolution and fan speed

lilsirecho wrote:

Perhaps you should place "nomodeset" in the grub kernel line to correct the display problem..

no, he should not if he's got intel or nouveau

Offline

#7 2010-03-11 02:46:29

lilsirecho
Veteran
Registered: 2003-10-24
Posts: 5,000

Re: Two problems with recent kernels - KMS resolution and fan speed

I have intel and nomodeset.


Prediction...This year will be a very odd year!
Hard work does not kill people but why risk it: Charlie Mccarthy
A man is not complete until he is married..then..he is finished.
When ALL is lost, what can be found? Even bytes get lonely for a little bit!     X-ray confirms Iam spineless!

Offline

#8 2010-03-11 03:09:17

eldragon
Member
From: Buenos Aires
Registered: 2008-11-18
Posts: 1,029

Re: Two problems with recent kernels - KMS resolution and fan speed

lilsirecho wrote:

I have intel and nomodeset.

check dmesg, you got 2 displays being initialized, disable the one that bothers  through the kernel boot param.

Offline

#9 2010-04-09 20:54:01

owain
Member
Registered: 2009-08-24
Posts: 251

Re: Two problems with recent kernels - KMS resolution and fan speed

Returning after another gap, still relying on a now-fairly-old kernel...

eldragon wrote:

chech if the svideo or tvout is being enabled.

if there are more than one display enabled, the console will take the space of the smallest..

This seems plausible - unfortunately, I don't have access to any external device to check directly what's happening - where should I look in logs or the file system to see what's happening?

under i915, you have to pass to the kernel: video=VGA-1:off

or whatever the display is.

This, and VGA-0 or 2, make no difference.

about the fan thing, if you can bisect that and report the commit that actually breaks your fan, they will probably fix it for future versions

I've tried and failed, and so have resorted to posting a rather unhelpful bug report - http://bugs.archlinux.org/task/19017

Offline

#10 2010-04-11 09:59:34

owain
Member
Registered: 2009-08-24
Posts: 251

Re: Two problems with recent kernels - KMS resolution and fan speed

Following this thread, I've found that xrandr reports TV1 as connected, but this isn't affected by adding video=TV1:off to grub as suggested there.

Screen 0: minimum 320 x 200, current 1440 x 900, maximum 8192 x 8192
VGA1 disconnected (normal left inverted right x axis y axis)
LVDS1 connected 1440x900+0+0 (normal left inverted right x axis y axis) 367mm x 230mm
   1440x900       59.9*+
   1024x768       60.0  
   800x600        60.3  
   640x480        59.9  
HDMI1 disconnected (normal left inverted right x axis y axis)
DP1 disconnected (normal left inverted right x axis y axis)
DP2 disconnected (normal left inverted right x axis y axis)
TV1 connected (normal left inverted right x axis y axis)
   848x480        59.9 +
   640x480        59.9 +   59.9  
   1920x1080      59.9  
   1400x1050      60.0  
   1280x1024      60.0     59.9  
   1280x960       60.0  
   1280x720       59.9  
   1024x768       60.0     59.9  
   800x600        60.3     59.9

Offline

Board footer

Powered by FluxBB