Bug#686939: linux-image-3.2.0-3-686-pae: fb: conflicting fb hw usage inteldrmfb vs VESA VGA - removing generic driver

2012-09-24 Thread Steven Shiau



On 2012/9/19 上午 11:46, Ben Hutchings wrote:

Does /etc/modprobe.d/i915-kms.conf exist in the live system?
I put /etc/modprobe.d/i915-kms.conf in the live CD filesystem.squashfs, 
with its contents:

  options i915 modeset=1
and even when I put nomodeset vga=788 in the boot parameters, now the 
live system would enter KMS mode directly.
On the other hand, I added nomodeset vga=788 i915.blacklist=yes in the 
boot parameter, and apparently it entered framebuffer mode 800x600.
So my question is, how can I let Debian Sid honor nomodeset vga=788 
without i915.blacklist=yes in the boot parameter and without 
/etc/modprobe.d/i915-kms.conf inside the live system?


Steven.

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National Center for High-performance Computing, Taiwan.
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Bug#686939: linux-image-3.2.0-3-686-pae: fb: conflicting fb hw usage inteldrmfb vs VESA VGA - removing generic driver

2012-09-23 Thread Steven Shiau

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On 09/19/2012 11:46 AM, Ben Hutchings wrote:
 On Wed, 2012-09-19 at 10:09 +0800, Steven Shiau wrote:

 On 2012/9/16 下午 01:13, Ben Hutchings wrote:
 On Fri, 2012-09-07 at 19:37 +0800, Steven Shiau wrote:
 Source: linux
 Version: 3.2.23-1
 Severity: important

 Dear Maintainer,

 When using nomodeset and vga=788 in the boot parameters, the
machine hang at
 fb: conflicting fb hw usage inteldrmfb vs VESA VGA - removing
generic driver
 on a machine with Intel VGA card.
 This happens no matter it's 686-pae kernel, or i486 one.
 Since the Intel VGA card in very common, please consider to make
framebuffer work for KMS disabled.

 DRM drivers with KMS *are* framebuffer drivers. I think you mean 'keep
 VGA console working'.

 How to reproduce this:
 1. Create a Debian live based on Sid:
 http://live-build.debian.net/cgi-bin/live-build
 2. Burn the created iso on a CD, then boot it on a machine with
Intel VGA card
 3. In the 1st boot menu of isolinux, press Tab key to modify the
boot parameters. Just append nomodeset vga=788, then press enter to
continue boot
 4. The above error will shown, and it just hangs there.

 This is really weird because i915 just shouldn't register a console at
 all if you do that... Ah, but xserver-video-xorg-intel still installs a
 configuration file which *overrides* nomodeset
 (/etc/modprobe.d/i915-kms.conf). (There was a very good reason for
 doing that in squeeze, but I think it can be dropped now.)

 So you could avoid installing xserver-video-xorg-intel, or empty the
 configuration file.

 Still, the kernel should be able to switch without hanging (and normally
 does). Does this *only* happen if you use 'nomodeset vga=788' or does
 it also happen if you use 'vga=788'?
 It only happens when I use 'nomodeset vga=788'.

 Does /etc/modprobe.d/i915-kms.conf exist in the live system?
Apparently /etc/modprobe.d/i915-kms.conf is from package
xserver-xorg-video-intel, however, since the Debian live CD I created is
in for text mode, this package xserver-xorg-video-intel is not included.
Therefore no /etc/modprobe.d/i915-kms.conf in the live system.
I believe this is the same case for xserver-xorg-video-radeon,

Steven.



 However, when using vga=788, actually it won't work since the console
 screen is not in the 800x600 text mode. It's in KMS mode I believe.

 Yes, by default i915 will load and set the screen mode immediately.

 Ben.


- -- 
Steven Shiau steven _at_ nchc org tw steven _at_ stevenshiau org
National Center for High-performance Computing, Taiwan.
http://www.nchc.org.tw
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Bug#686939: linux-image-3.2.0-3-686-pae: fb: conflicting fb hw usage inteldrmfb vs VESA VGA - removing generic driver

2012-09-18 Thread Steven Shiau



On 2012/9/16 下午 01:13, Ben Hutchings wrote:

On Fri, 2012-09-07 at 19:37 +0800, Steven Shiau wrote:

Source: linux
Version: 3.2.23-1
Severity: important

Dear Maintainer,

When using nomodeset and vga=788 in the boot parameters, the machine hang at
fb: conflicting fb hw usage inteldrmfb vs VESA VGA - removing generic driver
on a machine with Intel VGA card.
This happens no matter it's 686-pae kernel, or i486 one.
Since the Intel VGA card in very common, please consider to make framebuffer 
work for KMS disabled.


DRM drivers with KMS *are* framebuffer drivers.  I think you mean 'keep
VGA console working'.


How to reproduce this:
1. Create a Debian live based on Sid:
http://live-build.debian.net/cgi-bin/live-build
2. Burn the created iso on a CD, then boot it on a machine with Intel VGA card
3. In the 1st boot menu of isolinux, press Tab key to modify the boot parameters. Just 
append nomodeset vga=788, then press enter to continue boot
4. The above error will shown, and it just hangs there.


This is really weird because i915 just shouldn't register a console at
all if you do that...  Ah, but xserver-video-xorg-intel still installs a
configuration file which *overrides* nomodeset
(/etc/modprobe.d/i915-kms.conf).  (There was a very good reason for
doing that in squeeze, but I think it can be dropped now.)

So you could avoid installing xserver-video-xorg-intel, or empty the
configuration file.

Still, the kernel should be able to switch without hanging (and normally
does).  Does this *only* happen if you use 'nomodeset vga=788' or does
it also happen if you use 'vga=788'?

It only happens when I use 'nomodeset vga=788'.
However, when using vga=788, actually it won't work since the console 
screen is not in the 800x600 text mode. It's in KMS mode I believe.


Steven.


Ben.



--
Steven Shiau steven _at_ nchc org tw steven _at_ stevenshiau org
National Center for High-performance Computing, Taiwan.
http://www.nchc.org.tw
Public Key Server PGP Key ID: 1024D/9762755A
Fingerprint: A2A1 08B7 C22C 3D06 34DB  F4BC 08B3 E3D7 9762 755A


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Bug#686939: linux-image-3.2.0-3-686-pae: fb: conflicting fb hw usage inteldrmfb vs VESA VGA - removing generic driver

2012-09-18 Thread Ben Hutchings
On Wed, 2012-09-19 at 10:09 +0800, Steven Shiau wrote:
 
 On 2012/9/16 下午 01:13, Ben Hutchings wrote:
  On Fri, 2012-09-07 at 19:37 +0800, Steven Shiau wrote:
  Source: linux
  Version: 3.2.23-1
  Severity: important
 
  Dear Maintainer,
 
  When using nomodeset and vga=788 in the boot parameters, the machine 
  hang at
  fb: conflicting fb hw usage inteldrmfb vs VESA VGA - removing generic 
  driver
  on a machine with Intel VGA card.
  This happens no matter it's 686-pae kernel, or i486 one.
  Since the Intel VGA card in very common, please consider to make 
  framebuffer work for KMS disabled.
 
  DRM drivers with KMS *are* framebuffer drivers.  I think you mean 'keep
  VGA console working'.
 
  How to reproduce this:
  1. Create a Debian live based on Sid:
  http://live-build.debian.net/cgi-bin/live-build
  2. Burn the created iso on a CD, then boot it on a machine with Intel VGA 
  card
  3. In the 1st boot menu of isolinux, press Tab key to modify the boot 
  parameters. Just append nomodeset vga=788, then press enter to continue 
  boot
  4. The above error will shown, and it just hangs there.
 
  This is really weird because i915 just shouldn't register a console at
  all if you do that...  Ah, but xserver-video-xorg-intel still installs a
  configuration file which *overrides* nomodeset
  (/etc/modprobe.d/i915-kms.conf).  (There was a very good reason for
  doing that in squeeze, but I think it can be dropped now.)
 
  So you could avoid installing xserver-video-xorg-intel, or empty the
  configuration file.
 
  Still, the kernel should be able to switch without hanging (and normally
  does).  Does this *only* happen if you use 'nomodeset vga=788' or does
  it also happen if you use 'vga=788'?
 It only happens when I use 'nomodeset vga=788'.

Does /etc/modprobe.d/i915-kms.conf exist in the live system?

 However, when using vga=788, actually it won't work since the console 
 screen is not in the 800x600 text mode. It's in KMS mode I believe.

Yes, by default i915 will load and set the screen mode immediately.

Ben.

-- 
Ben Hutchings
The world is coming to an end.  Please log off.


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Bug#686939: linux-image-3.2.0-3-686-pae: fb: conflicting fb hw usage inteldrmfb vs VESA VGA - removing generic driver

2012-09-18 Thread Steven Shiau



On 2012/9/19 上午 11:46, Ben Hutchings wrote:

On Wed, 2012-09-19 at 10:09 +0800, Steven Shiau wrote:


On 2012/9/16 下午 01:13, Ben Hutchings wrote:

On Fri, 2012-09-07 at 19:37 +0800, Steven Shiau wrote:

Source: linux
Version: 3.2.23-1
Severity: important

Dear Maintainer,

When using nomodeset and vga=788 in the boot parameters, the machine hang at
fb: conflicting fb hw usage inteldrmfb vs VESA VGA - removing generic driver
on a machine with Intel VGA card.
This happens no matter it's 686-pae kernel, or i486 one.
Since the Intel VGA card in very common, please consider to make framebuffer 
work for KMS disabled.


DRM drivers with KMS *are* framebuffer drivers.  I think you mean 'keep
VGA console working'.


How to reproduce this:
1. Create a Debian live based on Sid:
 http://live-build.debian.net/cgi-bin/live-build
2. Burn the created iso on a CD, then boot it on a machine with Intel VGA card
3. In the 1st boot menu of isolinux, press Tab key to modify the boot parameters. Just 
append nomodeset vga=788, then press enter to continue boot
4. The above error will shown, and it just hangs there.


This is really weird because i915 just shouldn't register a console at
all if you do that...  Ah, but xserver-video-xorg-intel still installs a
configuration file which *overrides* nomodeset
(/etc/modprobe.d/i915-kms.conf).  (There was a very good reason for
doing that in squeeze, but I think it can be dropped now.)

So you could avoid installing xserver-video-xorg-intel, or empty the
configuration file.

Still, the kernel should be able to switch without hanging (and normally
does).  Does this *only* happen if you use 'nomodeset vga=788' or does
it also happen if you use 'vga=788'?

It only happens when I use 'nomodeset vga=788'.


Does /etc/modprobe.d/i915-kms.conf exist in the live system?
No. There is only a file /etc/modprobe.d/fbdev-blacklist.conf in the dir 
/etc/modprobe.d/.



However, when using vga=788, actually it won't work since the console
screen is not in the 800x600 text mode. It's in KMS mode I believe.


Yes, by default i915 will load and set the screen mode immediately.

Got it. Sure.
Thanks.

Steven.


Ben.



--
Steven Shiau steven _at_ nchc org tw steven _at_ stevenshiau org
National Center for High-performance Computing, Taiwan.
http://www.nchc.org.tw
Public Key Server PGP Key ID: 1024D/9762755A
Fingerprint: A2A1 08B7 C22C 3D06 34DB  F4BC 08B3 E3D7 9762 755A


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Bug#686939: linux-image-3.2.0-3-686-pae: fb: conflicting fb hw usage inteldrmfb vs VESA VGA - removing generic driver

2012-09-15 Thread Ben Hutchings
On Fri, 2012-09-07 at 19:37 +0800, Steven Shiau wrote:
 Source: linux
 Version: 3.2.23-1
 Severity: important
 
 Dear Maintainer,
 
 When using nomodeset and vga=788 in the boot parameters, the machine hang 
 at
 fb: conflicting fb hw usage inteldrmfb vs VESA VGA - removing generic driver
 on a machine with Intel VGA card.
 This happens no matter it's 686-pae kernel, or i486 one.
 Since the Intel VGA card in very common, please consider to make framebuffer 
 work for KMS disabled.

DRM drivers with KMS *are* framebuffer drivers.  I think you mean 'keep
VGA console working'.

 How to reproduce this:
 1. Create a Debian live based on Sid:
http://live-build.debian.net/cgi-bin/live-build
 2. Burn the created iso on a CD, then boot it on a machine with Intel VGA card
 3. In the 1st boot menu of isolinux, press Tab key to modify the boot 
 parameters. Just append nomodeset vga=788, then press enter to continue boot
 4. The above error will shown, and it just hangs there.

This is really weird because i915 just shouldn't register a console at
all if you do that...  Ah, but xserver-video-xorg-intel still installs a
configuration file which *overrides* nomodeset
(/etc/modprobe.d/i915-kms.conf).  (There was a very good reason for
doing that in squeeze, but I think it can be dropped now.)

So you could avoid installing xserver-video-xorg-intel, or empty the
configuration file.

Still, the kernel should be able to switch without hanging (and normally
does).  Does this *only* happen if you use 'nomodeset vga=788' or does
it also happen if you use 'vga=788'?

Ben.

-- 
Ben Hutchings
Experience is what causes a person to make new mistakes instead of old ones.


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Bug#686939: linux-image-3.2.0-3-686-pae: fb: conflicting fb hw usage inteldrmfb vs VESA VGA - removing generic driver

2012-09-07 Thread Steven Shiau
Source: linux
Version: 3.2.23-1
Severity: important

Dear Maintainer,

When using nomodeset and vga=788 in the boot parameters, the machine hang at
fb: conflicting fb hw usage inteldrmfb vs VESA VGA - removing generic driver
on a machine with Intel VGA card.
This happens no matter it's 686-pae kernel, or i486 one.
Since the Intel VGA card in very common, please consider to make framebuffer 
work for KMS disabled.
How to reproduce this:
1. Create a Debian live based on Sid:
   http://live-build.debian.net/cgi-bin/live-build
2. Burn the created iso on a CD, then boot it on a machine with Intel VGA card
3. In the 1st boot menu of isolinux, press Tab key to modify the boot 
parameters. Just append nomodeset vga=788, then press enter to continue boot
4. The above error will shown, and it just hangs there.

-- System Information:
Debian Release: wheezy/sid
  APT prefers unstable
  APT policy: (500, 'unstable')
Architecture: i386 (i686)

Kernel: Linux 3.2.0-3-686-pae (SMP w/1 CPU core)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash


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