[intel_extreme] Black screen (lit)

[thebuck]

R1beta4tc0, EFI boot, x86_64.

After all icons have lit up (native resolution), briefly shows the same picture with wrong stride (not sure if it is THAT picture, of course), then black, lit.

Intel HD Graphics 5300 (rev 09), PCI-ID 8086:161e (from lspci on Linux)

Internal panel: 1920x1080, capable of 60 and 120 Hz (with Linux)

Micro-HDMI (D type) socket present, but I have no cable for it.

[thebuck]

syslog, only intel_extreme-blocks.

[thebuck]

or Haswell? Both names appear in the log...

[thebuck]

Graphics used to work on this device (beta3, and some nightlies until halfway to beta4 at least), but I do not remember whether that was running on framebuffer automatically.

So this may be a regression.

[korli]

Broadwell is correct. No edid is found, only the resolution in the VBt is found. The driver isn't really able to switch to a non native resolution it seems. So it's supposed to be connected with eDP.

What's the exact PCI id for the graphics de vice?

[thebuck]

PCI-ID and connector information added.

[korli]

Thanks. It seems the EDID transmission somehow works, but the received data isn't checksummed OK. Have you the EDID available for instance from Linux?

[thebuck]

Linux /sys/class/drm/card0-eDP-1/edid

[thebuck]

In that drm folder there is also card0-HDMI-A-1 and card0-HDMI-A-2, but there is no dock or anything that might warrant two HDMI ports...

[thebuck]

/sys/class/drm/card0/device/graphics/fb0/stride = 7680

Wow. 9600 pixels wide virtual screen space

[korli]

Could you attach the contents of /sys/kernel/debug/dri/0/i915_frequency_info ?

[korli]

And test an image with a possible patch for this ​https://haiku.movingborders.es/testbuild/I6f3cc8b50fc5742fab3021f01b90dfebe484b336/1/hrev56605/x86_64/

[thebuck]

Linux /sys/kernel/debug/dri/0/i915_frequency_info

[thebuck]

No change in behaviour :(