modetest

Mode setting test tool for DRM/KMS drivers

Description

modetest is a command-line utility used to test and verify the functionality of DRM (Direct Rendering Manager) and KMS (Kernel Mode Setting) drivers.

Installation

• Source Code: Mesa / drm · GitLab
• Downloads: Index of /libdrm (dri.freedesktop.org)

Compilation:

./configure --prefix=/opt/ --host=aarch64-linux-gnu
make && make install

Syntax

modetest [OPTION]...

Options

Query Options:

-c      List connectors.
-e      List encoders.
-f      List framebuffers.
-p      List CRTCs and planes.

Test Options:

-P <plane_id>@<crtc_id>:<w>x<h>[+<x>+<y>][*<scale>][@<format>]   Set a plane.
-s <connector_id>[,<connector_id>][@<crtc_id>]:<mode>[-<vrefresh>][@<format>]   Set a display mode.
-C      Test hardware cursor.
-v      Test vertical blanking page flips.
-w <obj_id>:<prop_name>:<value>   Set a property.

Generic Options:

-a      Enable atomic mode setting.
-d      Drop master privileges after mode setting.
-M <module>      Specify the driver module to use.
-D <device>      Specify the device node to use.

Driver Modules (Example Values for <module>)

• i915: Intel Integrated Graphics
• amdgpu: AMD Radeon Graphics
• radeon: Legacy AMD Radeon Graphics
• nouveau: Open-source NVIDIA Graphics
• vmwgfx: VMware Graphics
• omapdrm: TI OMAP Graphics
• exynos: Samsung Exynos Graphics
• msm: Qualcomm MSM Graphics
• rockchip: Rockchip Graphics

Examples

Query device information:

modetest

Test display on a MIPI-DSI device using the Rockchip driver:

modetest -M rockchip -s 211@108:1200x1920 -v

This command will typically display a sequence of color blocks or test patterns on the screen.

Test with hardware cursor:

modetest -M rockchip -s 211@108:1200x1920 -C