Radeon 3650HD laptop LVDS lid open/closed detection problem
alexdeucher at gmail.com
Mon Jul 12 07:48:08 PDT 2010
On Mon, Jul 12, 2010 at 7:53 AM, Pasi Kärkkäinen <pasik at iki.fi> wrote:
> On Mon, Jun 21, 2010 at 11:12:51AM -0400, Alex Deucher wrote:
>> On Mon, Jun 21, 2010 at 10:53 AM, Francisco Jerez <currojerez at riseup.net> wrote:
>> > Jerome Glisse <glisse at freedesktop.org> writes:
>> >> On Mon, Jun 21, 2010 at 03:31:19PM +0300, Pasi Kärkkäinen wrote:
>> >>> Hello,
>> >>> After fixing the dvi/hdmi detection problem I now have another problem
>> >>> with the HP EliteBook 8530p, which has Radeon 3650HD adapter.
>> >>> Here's a summary of the environment:
>> >>> - laptop connected to a docking station.
>> >>> - external display in use, connected with DVI to the dock.
>> >>> - laptop lid closed, so internal LVDS display is not used.
>> >>> Now, when I start the laptop, I can see the BIOS and grub on the external DVI display.
>> >>> All fine so far. I select the Fedora 13 kernel, and Linux starts. I see the Fedora
>> >>> graphical boot on the external DVI display, just like it should be. GDM login prompt
>> >>> appears on the external DVI display, still everything fine.
>> >>> And then it goes wrong. After I login to X, the external display only shows the background
>> >>> picture.. it turns out the desktop stuff has been started to the internal LVDS display,
>> >>> which shouldn't be used at all since the laptop lid is closed!!
>> >>> When the laptop lid is closed, and external display is connected, I want to use only the external display..
>> >>> Any ideas how to troubleshoot this one?
>> Does it work ok if you boot up without the external display connected
>> and then connect and enable the secondary display after you've logged
> I just tried this.
> I boot up the laptop with lid open, so ONLY the internal LVDS is active
> (DVI cable disconnected), and I get the GDM login prompt on the internal LVDS.
> Then I plug in the external DVI display, and the external display
> gets automatically active when X starts. Gnome panel etc are on the internal LVDS,
> external DVI display only has the background image and nothing else.
> So that works as expected. No problems there.
>> I have a similar issue here; I think it's an issue with rhgb and
>> starting X. If I boot with an external display, the entire plymouth
>> load sequence works fine, but then when X starts the external display
>> goes blank and the internal display hangs on the plymouth screen. On
>> a related note, if I close the lid and turn off the LVDS output, gpm
>> never blanks the external monitor. I have to manually force dpms with
> The other patch (0001-drm-radeon-kms-fix-shared-ddc-handling.patch) applied
> my system mostly works now, but here's a summary about the problem I still have
> with the lid detection:
> - I boot up the laptop with lid closed (LVDS inactive) so there's only external
> DVI display connected. Kernel boot messages show up on the external DVI display,
> and GDM login prompt appears on the external DVI display. All fine so far.
> - The actual problem: when X starts gnome panel etc show up on the internal LVDS
> display, which I can't see at all since the lid is closed! So those should go to the
> external DVI display only.. LVDS should be disconnected or inactive or something..
> Any pointers appreciated where to look at in the source.. I can do some debugging.
Your desktop session manager should check the lid status when it loads
and attempt to do the right thing if there is an external monitor
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