Intel Atom (ValleyView Mobile) not correctly supported by intel_extreme driver

[taos]

I'm triple-booting my Acer TM B115 netbook. Since most of the time I'm running Archlinux on bare metal and Haiku in VirtualBox, I didn't notice that Haiku's intel_extreme driver started to support my GPU. So, when booting hrev51502 x86_64, I was quite surprised to see a slightly scrambled Desktop - it was shifted to the bottom, showing a big black bar at the top and missing the lower part, the left part was displayed on the right, and the right part on the left:

The last time I booted Haiku on bare metal before I noticed the change, I was still at hrev51206 when framebuffer.accelerant was loaded (I'm booting with EFI).

listdev identifies the GPU as

device Display controller (VGA compatible controller, VGA controller) [3|0|0]
  vendor 8086: Intel Corporation
  device 0f31: Atom Processor Z36xxx/Z37xxx Series Graphics & Display

listimage | grep accel displays the used graphics driver as:

 1522 0x000000b15387d000 0x000000b153a95000     0          0 /boot/system/add-ons/accelerants/intel_extreme.accelerant
TEAM  971 (/bin/grep accel):

And Screen application uses the name "Intel Atom (ValleyView Mobile):

I've attached the syslog file.

[taos]

Screenshot of Screen application under hrev51502.

[taos]

Syslog booting hrev51502

[taos]

Scrambled desktop.

[taos]

Screenshot of Screen application under hrev51502.

[taos]

BTW, just noticed that framebuffer_accelerant was removed in hrev51207, since then, vesa_accelerant should be used for both EFI and BIOS systems as backup driver.

[taos]

Let me know if you need further information or if I can help testing a modified version of the intel_extreme driver and accelerant.

BTW, could someone remove "Has a Patch" from the ticket description and change the component from "- General" to Drivers - Graphics - intel_extreme? Thanks.

[taos]

Problem still exists in hrev52301 (x86_64). It might be a good idea to remove support for this chipset from intel_extreme for the beta.

[kallisti5]

​https://review.haiku-os.org/#/c/haiku/+/506

[taos]

Problem not affected by changes in hrev53040.

[pulkomandy]

Please try with hrev53857 or later and provide an updated syslog if it still doesn't work.

[taos]

After updating to hrev53880, I still see the same issue. Syslog is attached.

[taos]

syslog before and after updating to hrev53880

[pulkomandy]

In ​https://review.haiku-os.org/c/haiku/+/2499 I disabled the modern Intel devices in the driver. We just don't support them. This will bring back VESA for you.

I think this at least allows us to move this out of the beta2 milestone. We can revisit it later when we start actually adding support for modern Intel video devices.

[pulkomandy]

Move tickets that will not be solved in beta2 to beta3.

[pulkomandy]

No one is working on the intel driver at the moment so it seems no progress will be made on these issues for beta3. Remove them from the milestone so we can better see our status.

[korli]

please check with a current nightly and provide a syslog. Thanks!

[taos]

It's still using the Framebuffer Driver according to Screen preferences in hrev56571. Syslog is attached.

[taos]

syslog after update to hrev56571

[korli]

Indeed Valleyview isn't supported at the moment.