[Bug 37362] New: vgaswitcheroo : switch from intel to ati impossible

[Bug 37362] New: vgaswitcheroo : switch from intel to ati impossible

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=37362

           Summary: vgaswitcheroo : switch from intel to ati impossible
           Product: Drivers
           Version: 2.5
    Kernel Version: 2.6.38 and 2.6.39
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Video(DRI - non Intel)
        AssignedTo: drivers_video-dri@kernel-bugs.osdl.org
        ReportedBy: pub@ackak.fr
        Regression: No


Created an attachment (id=61732)
 --> (https://bugzilla.kernel.org/attachment.cgi?id=61732)
lspci -vv

When i use the command "echo DIS > /sys/kernel/debug/vgaswitcheroo/switch", the
screen of my laptop (HP Pavilion dv7) freeze. Impossible to switch to another
tty and if i write a command in the console nothing appears.

If i write "echo IGD > /sys/kernel/debug/vgaswitcheroo/swith", the screen
refreshes and i can use normally my laptop.

I can't disable the intel card in the bios.

the result of the command "cat /sys/kernel/debug/vgaswitcheroo/swith" :
0:DIS: :Pwr:0000:01:00.0
1:IGD:+:Pwr:0000:00:02.0

The log (/var/log/messages) when i want switch to ATI :
Jun 12 22:11:17 ackak-hp kernel: [  133.005729] fbcon: Remapping primary
device, fb0, to tty 1-63
Jun 12 22:11:17 ackak-hp kernel: [  133.005976] i915: switched off

-- 
Configure bugmail: https://bugzilla.kernel.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are watching the assignee of the bug.

[Bug 37362] vgaswitcheroo : switch from intel to ati impossible

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=37362





--- Comment #1 from pub@ackak.fr  2011-06-12 22:47:13 ---
Created an attachment (id=61752)
 --> (https://bugzilla.kernel.org/attachment.cgi?id=61752)
dmesg

-- 
Configure bugmail: https://bugzilla.kernel.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are watching the assignee of the bug.

[Bug 37362] vgaswitcheroo : switch from intel to ati impossible

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=37362


pub@ackak.fr changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #61732|application/octet-stream    |text/plain
          mime type|                            |




-- 
Configure bugmail: https://bugzilla.kernel.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are watching the assignee of the bug.

[Bug 37362] vgaswitcheroo : switch from intel to ati impossible

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=37362


pub@ackak.fr changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #61752|application/octet-stream    |text/plain
          mime type|                            |




-- 
Configure bugmail: https://bugzilla.kernel.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are watching the assignee of the bug.

[Bug 37362] vgaswitcheroo : switch from intel to ati impossible

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=37362


Alex Deucher <alexdeucher@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |alexdeucher@gmail.com




--- Comment #2 from Alex Deucher <alexdeucher@gmail.com>  2011-06-13 14:13:46 ---
Is there an option in your bios setup to select the discrete graphics? Try
selecting that. vgaswitcheroo only supports hybrid GPUs with display MUXes.
Some new laptops are MUX-less (which yours appears to be) which means the
display hardware is only attached to the integrated GPU and the other one is
strictly used for rendering. Unfortunately, the X server needs a lot of work to
support that scenario so it work be supported any time soon in the open source
drivers.

-- 
Configure bugmail: https://bugzilla.kernel.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are watching the assignee of the bug.

[Bug 37362] vgaswitcheroo : switch from intel to ati impossible

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=37362





--- Comment #3 from pub@ackak.fr  2011-06-13 16:31:20 ---
Thanks for your response.

I don't have an option in the bios to select the graphic card.

How can I check if the GPU is MUXes or MUX-less ?

I make the test, without running the X server.

Should I do more tests or wait ?

-- 
Configure bugmail: https://bugzilla.kernel.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are watching the assignee of the bug.

[Bug 37362] vgaswitcheroo : switch from intel to ati impossible

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=37362





--- Comment #4 from Alex Deucher <alexdeucher@gmail.com>  2011-06-13 16:37:27 ---
(In reply to comment #3)
> How can I check if the GPU is MUXes or MUX-less ?

Double check with your OEM, but being that your radeon card has no displays
listed in its configuration, I'm pretty sure it's MUX-less.

> Should I do more tests or wait ?

There's not much else you can do until the X server gets support for split
display and rendering.

-- 
Configure bugmail: https://bugzilla.kernel.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are watching the assignee of the bug.

[Bug 37362] vgaswitcheroo : switch from intel to ati impossible

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=37362





--- Comment #5 from pub@ackak.fr  2011-06-13 16:55:17 ---
I have format the disk, so I don't have OEM :)

> There's not much else you can do until the X server gets support for split
> display and rendering.

Ok, thanks.

-- 
Configure bugmail: https://bugzilla.kernel.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are watching the assignee of the bug.

[Bug 37362] vgaswitcheroo : switch from intel to ati impossible

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=37362





--- Comment #6 from Alex Deucher <alexdeucher@gmail.com>  2011-06-13 21:08:49 ---
This bug can probably be closed.  This isn't really a kernel bug.  The X server
needs a major amount of work before MUX-less systems can be supported.

-- 
Configure bugmail: https://bugzilla.kernel.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are watching the assignee of the bug.

[Bug 37362] vgaswitcheroo : switch from intel to ati impossible

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=37362





--- Comment #7 from pub@ackak.fr  2011-06-13 21:34:29 ---
I don't understand. When I make the test, the X server isn't running. I write
the command directly in the tty with the framebuffer.

The server X can't use this graphic card, ok, but i have a problem directly in
console. So i don't why it isn't a problem with the kernel.

(sorry for my english)

-- 
Configure bugmail: https://bugzilla.kernel.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are watching the assignee of the bug.

[Bug 37362] vgaswitcheroo : switch from intel to ati impossible

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=37362





--- Comment #8 from Alex Deucher <alexdeucher@gmail.com>  2011-06-13 21:49:40 ---
(In reply to comment #7)
> I don't understand. When I make the test, the X server isn't running. I write
> the command directly in the tty with the framebuffer.
> 
> The server X can't use this graphic card, ok, but i have a problem directly in
> console. So i don't why it isn't a problem with the kernel.

On a MUX-less systems, the displays are not connected to the discrete card at
all.  There is no way to switch the displays to the discrete card thus, there
is no way to use the discrete card for the console.  The only way to utilize
the discrete card is for offscreen rendering via X or some other GUI an in
order to do that, the X server needs a major amount of work.

-- 
Configure bugmail: https://bugzilla.kernel.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are watching the assignee of the bug.

[Bug 37362] vgaswitcheroo : switch from intel to ati impossible

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=37362


Erik Hardesty <dalingrin@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |dalingrin@gmail.com




--- Comment #9 from Erik Hardesty <dalingrin@gmail.com>  2011-07-16 06:31:08 ---
FWIW, I also have a DV7, specifically, I have a DV7t-6000. This model
supposedly uses a MUX. Despite having a MUX I have the exact same symptoms as
this bug report. This is true for kernels 2.6.38 - 3.0rc7

-- 
Configure bugmail: https://bugzilla.kernel.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are watching the assignee of the bug.

[Bug 37362] vgaswitcheroo : switch from intel to ati impossible

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=37362


Alan <alan@lxorguk.ukuu.org.uk> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
                 CC|                            |alan@lxorguk.ukuu.org.uk
         Resolution|                            |WILL_FIX_LATER




-- 
Configure bugmail: https://bugzilla.kernel.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are watching the assignee of the bug.