(Intel i915 Arch linux and Ubuntu 16.04): Blender game engine Sun Shadow bug

[aalab1]

In Blender game engine, switch sun/Spot shadow causes all the scene gets dark. I isn't software bug. becaue other versions of blender is dark, too.

I have this problem since about one weeks ago.

Kernel log about video:

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4/26/16 7:13 PM pci 0000 0:02.0: Video device with shadowed ROM

4/26/16 7:13 PM ACPI Video Device [VID1] (multi-head: yes rom: no post: no)

4/26/16 7:13 PM input Video Bus as /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A03:00/LNXVIDEO:01/input/input7

4/26/16 7:13 PM [Firmware Bug] Duplicate ACPI video bus devices for the same VGA controller, please try module parameter "video.allow_duplicates=1"if the current driver doesn't work.

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Xorg log:

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Information [27.835] X.Org Video Driver: 20.0 Information [28.340] Module class: X.Org Video Driver Information [28.340] ABI class: X.Org Video Driver, version 20.0 Information [28.354] Module class: X.Org Video Driver Information [28.354] ABI class: X.Org Video Driver, version 20.0 Information [28.493] (--) intel(0): Found backlight control interface acpi_video0 (type 'firmware') for output LVDS1 Information [29.360] (II) config/udev: Adding input device Video Bus (/dev/input/event6) Information [29.360] (**) Video Bus: Applying InputClass "evdev keyboard catchall" Information [29.360] (**) Video Bus: Applying InputClass "libinput keyboard catchall" Information [29.488] (II) Using input driver 'libinput' for 'Video Bus' Information [29.488] (**) Video Bus: always reports core events Information [29.489] (II) input device 'Video Bus', /dev/input/event6 is tagged by udev as: Keyboard Information [29.489] (II) input device 'Video Bus', /dev/input/event6 is a keyboard Information [29.500] (**) Option "config_info" "udev:/sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A03:00/LNXVIDEO:01/input/input7/event6" Information [29.500] (II) XINPUT: Adding extended input device "Video Bus" (type: KEYBOARD, id 6) Information [29.500] (II) input device 'Video Bus', /dev/input/event6 is tagged by udev as: Keyboard Information [29.500] (II) input device 'Video Bus', /dev/input/event6 is a keyboard Information [70.975] (II) input device 'Video Bus', /dev/input/event6 is tagged by udev as: Keyboard Information [70.975] (II) input device 'Video Bus', /dev/input/event6 is a keyboard

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Journald log:

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4/26/16 7:13 PM kernel pci 0000:00:02.0: Video device with shadowed ROM

4/26/16 7:13 PM kernel ACPI: Video Device [VID1] (multi-head: yes rom: no post: no)

4/26/16 7:13 PM kernel input: Video Bus as /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A03:00/LNXVIDEO:01/input/input7

4/26/16 7:13 PM kernel [Firmware Bug]: Duplicate ACPI video bus devices for the same VGA controller, please try module parameter "video.allow_duplicates=1"if the current driver doesn't work.

4/26/16 7:13 PM systemd Starting Load/Save Screen Backlight Brightness of backlight:acpi_video0...

4/26/16 7:13 PM systemd Started Load/Save Screen Backlight Brightness of backlight:acpi_video0.

4/26/16 7:13 PM systemd-logind Watching system buttons on /dev/input/event6 (Video Bus)

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[aalab1]

My another problem is famous bug: intel_do_flush_locked failed: Input/output error. I have this error, too.

In some apps like godot engine shader material.

I said this only for information.

[aalab1]

I tested blender 2.66a in old ubuntu 10.10 (live cd) and get same result. but randomly have this shots:

[aalab1]

When I run in blender-softwaregl, it is good. Is it a hardware crash?

LIBGL_ALWAYS_SOFTWARE=1 ./blender is good, too.

[idata]

Hello, alabd14313:

Thank you for contacting the Intel Communities.Intel has a dedicated communities support for products while using Linux based OS, it is https://01.org/community https://01.org/communityMy recommendation would be to post your inquiry there, and let peers assist you on that matter.Additionally, you could post this quiestion in the support for that engine: https://www.blender.org/support/ https://www.blender.org/support/If any additional questions or inquiries are present, feel free to contact us back.Regards,Esteban C