Hi,
On 16-04-19 16:32, Patrik Jakobsson wrote:
On Wed, Apr 10, 2019 at 1:51 PM Dominik 'Rathann' Mierzejewski
<domi...@greysector.net> wrote:
On Wednesday, 10 April 2019 at 13:33, Patrik Jakobsson wrote:
On Wed, Apr 10, 2019 at 1:18 PM Dominik 'Rathann' Mierzejewski
<domi...@greysector.net> wrote:
On Wednesday, 10 April 2019 at 11:08, Hans de Goede wrote:
On 10-04-19 11:00, Patrik Jakobsson wrote:
On Wed, Apr 10, 2019 at 9:27 AM Hans de Goede <hdego...@redhat.com> wrote:
On 09-04-19 21:31, Dominik 'Rathann' Mierzejewski wrote:
On Tuesday, 09 April 2019 at 16:44, Hans de Goede wrote:
On 09-04-19 14:05, Patrik Jakobsson wrote:
[...]
I'm not totally against this but not sure about the consequences. Is
there perhaps a better dmi string to match against?
No there are no better DMI strings to match against I'm afraid.
I did load default settings in BIOS setup and there's no change in
behaviour. LVDS gets detected as connected:
$ cat /sys/class/drm/card0-LVDS-1/status
connected
Only VGA output is physically connected at the moment.
To be clear what Dominik means here is that he has a VGA monitor
connected. There is no LVDS panel in this device at all.
Thanks for testing. I dusted off my DN2800MT and tried turning LVDS
on/off in the BIOS. With LVDS disabled gma500 reports it as connected.
When LVDS is enabled in bios I instead get a connected eDP connector.
I'm starting to think that broken VBT parsing might be the actual
problem.
Maybe, but I assume there are CedarView based laptops with LVDS panels
which works, so I suspect this might be more of a bug in your BIOS.
So what is the next step in debugging this?
To add a small twist, I got an updated BIOS from the vendor to fix
another issue (https://bugzilla.kernel.org/show_bug.cgi?id=199117)
and the DMI string has changed to: "CDV W Series 05", so Hans' patch
no longer matches my machine.
Hi Dominik,
Do you have any option to enable/disable LVDS in your BIOS. The BIOS
default might not be to disable LVDS since they apparently solved the
issue on the command line anyway. If there is an option to turn it off
but you still get the same problem, then it is possible that detection
of "LVDS disabled" in the driver might be bad.
No, there's no option to enable/disable LVDS. The machine is a NAS box
and doesn't have an LVDS physically. You can see the motherboard e.g.
here: https://youtu.be/ZYNQvZNGLsE?t=855 .
I've posted a patch: https://patchwork.freedesktop.org/patch/299821/
Previously we only checked for a child device and ignored the lvds
config bits. Hopefully this fixes your problem.
Dominik,
As also discussed in bugzilla:
https://bugzilla.redhat.com/show_bug.cgi?id=1665766#c23
I've started a Fedora kernel test-build with Patrik's patch added,
please test this:
https://koji.fedoraproject.org/koji/taskinfo?taskID=34215831
Regards,
Hans
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