Two quick questions about KMS and powering off the computer

slughappy1 · 2011-05-23 18:41:36

I have an Intel GM965 x3100 video card in my laptop and just wanted to make sure the i915 was the correct module to load. I added the MODULES="i915" to /etc/mkinitcpio.conf and then executed the code 'mkinitcpio -p kernel26' and it worked and boots up just fine. I wanted to have the bootup process be in my native resolution though, so I tried changing my grub entry to be "kernel /boot/vmlinuz26 root=/dev/sda6 ro" to "kernel /boot/vmlinuz26 root=/dev/sda6 ro i915.modset=1". When I try booting up with that, all I get is a blank screen and it goes nowhere.

When I power off my laptop it always goes to the TTY1 for 5-10 seconds and then shuts down. I was just curious why it does that.

Ramses de Norre · 2011-05-23 18:47:23

For early kms you need to put the i915 module in the modules array of /etc/mkinitcpio.conf (and possibly also the intel_agp module). This is necessary because these modules have to be loaded before the root device is ready.

Last edited by Ramses de Norre (2011-05-23 18:47:39)

karol · 2011-05-23 18:49:06

First of all, it's modeset, not modset - you have a typo there.
'i915.modeset=1' shouldn't be necessary.. Try https://wiki.archlinux.org/index.php/KMS#Forcing_modes 'video=' instead.

twilight0 · 2011-05-23 20:23:53

Ramses de Norre wrote:

and possibly also the intel_agp module

I think its intel-agp not intel_agp

# ls -a /lib/modules/2.6.38-ARCH/kernel/drivers/char/agp/
. agpgart.ko.gz amd64-agp.ko.gz ati-agp.ko.gz intel-agp.ko.gz nvidia-agp.ko.gz sworks-agp.ko.gz
.. ali-agp.ko.gz amd-k7-agp.ko.gz efficeon-agp.ko.gz intel-gtt.ko.gz sis-agp.ko.gz via-agp.ko.gz

karol · 2011-05-23 20:29:06

twilight0 wrote:

Ramses de Norre wrote:
and possibly also the intel_agp module
I think its intel-agp not intel_agp

Module names may be different from filenames. The wiki still says intel_agp.

ebal · 2011-11-12 08:38:06

Booting my laptop with 3.1.0-4 my screen goes black!
I dont have/use any display manager, only startx!

The boot process is ok.
If i type (blind) my user credentials, then i can write (blind) startx
and my screen loads the window manager without a problem.

If you can plz help.

Below are my info

[ebal@mylaptop ~]€ uname -a
Linux mylaptop 3.1.0-4-ARCH #1 SMP PREEMPT Mon Nov 7 23:21:44 CET 2011 i686 Intel(R) Core(TM)2 CPU T5600 @ 1.83GHz GenuineIntel GNU/Linux

[ebal@mylaptop ~]€ sudo dmesg | grep agpgart
[ 4.631455] Linux agpgart interface v0.103
[ 5.163590] agpgart-intel 0000:00:00.0: Intel 945GM Chipset
[ 5.163873] agpgart-intel 0000:00:00.0: detected gtt size: 262144K total, 262144K mappable
[ 5.164898] agpgart-intel 0000:00:00.0: detected 8192K stolen memory
[ 5.166323] agpgart-intel 0000:00:00.0: AGP aperture is 256M @ 0xc0000000

# /boot/grub/menu

title Arch Linux v3
root (hd0,5)
kernel /boot/vmlinuz-linux root=/dev/sda6 ro
initrd /boot/initramfs-linux.img

[ebal@mylaptop ~]€ lsmod | grep 915
i915 625140 2
drm_kms_helper 22237 1 i915
drm 149266 3 i915,drm_kms_helper
i2c_algo_bit 4455 1 i915
intel_agp 8720 1 i915
intel_gtt 11449 3 i915,intel_agp
i2c_core 16816 5 i915,drm_kms_helper,drm,i2c_algo_bit,i2c_i801
video 9716 1 i915
button 3614 1 i915

[ebal@mylaptop ~]€ grep -v -E '#|^$' /etc/mkinitcpio.conf
MODULES=""
BINARIES=""
FILES=""
HOOKS="base udev autodetect pata scsi sata uresume filesystems usbinput"
COMPRESSION="xz"

Arch Linux

#1 2011-05-23 18:41:36

Two quick questions about KMS and powering off the computer

#2 2011-05-23 18:47:23

Re: Two quick questions about KMS and powering off the computer

#3 2011-05-23 18:49:06

Re: Two quick questions about KMS and powering off the computer

#4 2011-05-23 20:23:53

Re: Two quick questions about KMS and powering off the computer

#5 2011-05-23 20:29:06

Re: Two quick questions about KMS and powering off the computer

#6 2011-11-12 08:38:06

Re: Two quick questions about KMS and powering off the computer

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