Contents
What kind of DRM does Intel i915 use?
This excludes a set of SoC platforms with an SGX rendering unit, those have basic support through the gma500 drm driver. This section covers core driver infrastructure used by both the display and the GEM parts of the driver. The i915 driver supports dynamic enabling and disabling of entire hardware blocks at runtime.
Why is the i915 driver important for Linux?
The i915 driver supports dynamic enabling and disabling of entire hardware blocks at runtime. This is especially important on the display side where software is supposed to control many power gates manually on recent hardware, since on the GT side a lot of the power management is done by the hardware.
Can you use i915 to analyze GPU utilization?
To collect i915 ftrace events required to analyze the GPU utilization, your Linux kernel should be properly configured. If the Intel® VTune™ Profiler cannot start an analysis and provides an error message:
How does an unmodified i915 GFX driver work?
However with the partitioning an unmodified i915 driver would assume a smaller graphics memory starting from address ZERO, then requires vGPU emulation module to translate the graphics address between ‘guest view’ and ‘host view’, for all registers and command opcodes which contain a graphics memory address.
How to fix dmesg errors from last night?
Forgive the multiple pastes, but pastbin only allowed 500ish bytes per paste. I used journalctl –since to pull the entire dmesg from last night’s boot when the errors occured. They are broken into three parts, and they are in order: This is a clean boot, no errors or issues, from this morning before work.
Can a i915 driver run in a virtual machine?
Intel GVT-g is a graphics virtualization technology which shares the GPU among multiple virtual machines on a time-sharing basis. Each virtual machine is presented a virtual GPU (vGPU), which has equivalent features as the underlying physical GPU (pGPU), so i915 driver can run seamlessly in a virtual machine.
Where can I find the dmesg and kernel info?
EDITED original post to include full dmesg, and kernel info. The dmesg was still incomplete possibly it overflowed the ring buffer. You can extract it from the journal journal or add the boot option log_buf_len=2M. The warnings are coming from the i915 driver used by the integrated GPU which seems strange if it is not being used.