daniel gessel wrote:
> The tool "drm_info" will report details on available modes
> (and much more) if you have relatively modern graphics
> drivers. The package name has a hyphen instead of an
> underscore: "drm-info".
installed drm_info and got this:
Node: /dev/dri/card0
├───Driver: simpledrm (DRM driver for simple-framebuffer platform devices)
version 1.0.0 (20200625)
│ ├───DRM_CLIENT_CAP_STEREO_3D supported
│ ├───DRM_CLIENT_CAP_UNIVERSAL_PLANES supported
│ ├───DRM_CLIENT_CAP_ATOMIC supported
│ ├───DRM_CLIENT_CAP_ASPECT_RATIO supported
│ ├───DRM_CLIENT_CAP_WRITEBACK_CONNECTORS supported
│ ├───DRM_CAP_DUMB_BUFFER = 1
│ ├───DRM_CAP_VBLANK_HIGH_CRTC = 1
│ ├───DRM_CAP_DUMB_PREFERRED_DEPTH = 24
│ ├───DRM_CAP_DUMB_PREFER_SHADOW = 0
│ ├───DRM_CAP_PRIME = 3
│ ├───DRM_CAP_TIMESTAMP_MONOTONIC = 1
│ ├───DRM_CAP_ASYNC_PAGE_FLIP = 0
│ ├───DRM_CAP_CURSOR_WIDTH = 64
│ ├───DRM_CAP_CURSOR_HEIGHT = 64
│ ├───DRM_CAP_ADDFB2_MODIFIERS = 1
│ ├───DRM_CAP_PAGE_FLIP_TARGET = 0
│ ├───DRM_CAP_CRTC_IN_VBLANK_EVENT = 1
│ ├───DRM_CAP_SYNCOBJ = 0
│ └───DRM_CAP_SYNCOBJ_TIMELINE = 0
├───Device: platform simple-framebuffer
│ └───Available nodes: primary
├───Framebuffer size
│ ├───Width: [1024, 4096]
│ └───Height: [768, 4096]
├───Connectors
│ └───Connector 0
│ ├───Object ID: 35
│ ├───Type: unknown
│ ├───Status: connected
│ ├───Physical size: 270x203 mm
│ ├───Subpixel: unknown
│ ├───Encoders: {0}
│ ├───Modes
│ │ └───1024x768@60.00 preferred driver
│ └───Properties
│ ├───"EDID" (immutable): blob = 0
│ ├───"DPMS": enum {On, Standby, Suspend, Off} = On
│ ├───"link-status": enum {Good, Bad} = Good
│ ├───"non-desktop" (immutable): range [0, 1] = 0
│ ├───"TILE" (immutable): blob = 0
│ └───"CRTC_ID" (atomic): object CRTC = 33
├───Encoders
│ └───Encoder 0
│ ├───Object ID: 34
│ ├───Type: none
│ ├───CRTCS: {0}
│ └───Clones: {0}
├───CRTCs
│ └───CRTC 0
│ ├───Object ID: 33
│ ├───Legacy info
│ │ ├───Mode: 1024x768@60.00 preferred driver
│ │ └───Gamma size: 0
│ └───Properties
│ ├───"ACTIVE" (atomic): range [0, 1] = 1
│ ├───"MODE_ID" (atomic): blob = 39
│ │ └───1024x768@60.00 preferred driver
│ ├───"OUT_FENCE_PTR" (atomic): range [0, UINT64_MAX] = 0
│ └───"VRR_ENABLED": range [0, 1] = 0
└───Planes
└───Plane 0
├───Object ID: 31
├───CRTCs: {0}
├───Legacy info
│ ├───FB ID: 38
│ │ ├───Object ID: 38
│ │ ├───Size: 1024x768
│ │ ├───Format: XRGB8888 (0x34325258)
│ │ ├───Modifier: DRM_FORMAT_MOD_LINEAR (0x0)
│ │ └───Planes:
│ │ └───Plane 0: offset = 0, pitch = 4096 bytes
│ └───Formats:
│ └───XRGB8888 (0x34325258)
└───Properties
├───"type" (immutable): enum {Overlay, Primary, Cursor} = Primary
├───"FB_ID" (atomic): object framebuffer = 38
│ ├───Object ID: 38
│ ├───Size: 1024x768
│ ├───Format: XRGB8888 (0x34325258)
│ ├───Modifier: DRM_FORMAT_MOD_LINEAR (0x0)
│ └───Planes:
│ └───Plane 0: offset = 0, pitch = 4096 bytes
├───"IN_FENCE_FD" (atomic): srange [-1, INT32_MAX] = -1
├───"CRTC_ID" (atomic): object CRTC = 33
├───"CRTC_X" (atomic): srange [INT32_MIN, INT32_MAX] = 0
├───"CRTC_Y" (atomic): srange [INT32_MIN, INT32_MAX] = 0
├───"CRTC_W" (atomic): range [0, INT32_MAX] = 1024
├───"CRTC_H" (atomic): range [0, INT32_MAX] = 768
├───"SRC_X" (atomic): range [0, UINT32_MAX] = 0
├───"SRC_Y" (atomic): range [0, UINT32_MAX] = 0
├───"SRC_W" (atomic): range [0, UINT32_MAX] = 1024
├───"SRC_H" (atomic): range [0, UINT32_MAX] = 768
├───"IN_FORMATS" (immutable): blob = 32
│ └───DRM_FORMAT_MOD_LINEAR (0x0)
│ └───XRGB8888 (0x34325258)
└───"FB_DAMAGE_CLIPS" (atomic): blob = 41
don't know what to do.
tia,
ole dan
j. daniel moylan
84 harvard ave
brookline, ma 02446-6202
617-777-0207 (cel)
j...@moylan.us
www.moylan.us
[BLM]
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