Camera doesn't work on Dell Pro Max 14 Premium MA14250

[jech]

This is a followup to https://gitlab.freedesktop.org/camera/libcamera/-/issues/318 and https://lore.kernel.org/linux-media/871pibinp1.wl-jch@irif.fr/T/.

I'm running kernel 6.18.12+deb14-amd64. Following some advice received by pricate mail, I've built the usbio drivers and the vision drivers:

$ sudo insmod usbio.ko 
$ sudo insmod gpio-usbio.ko 
$ sudo insmod i2c-usbio.ko 
$ sudo insmod intel_cvs.ko

Libcamera now seems to recognise the device, but shows a lot of errors:

[6:28:38.741460223] [31088]  INFO Camera camera_manager.cpp:340 libcamera v0.7.0
[6:28:38.751513090] [31091] ERROR V4L2 v4l2_subdevice.cpp:1192 'ov08x40 21-0036': Unable to get rectangle 2 on pad 0/0: Inappropriate ioctl for device
[6:28:38.751521984] [31091]  WARN CameraSensor camera_sensor_legacy.cpp:402 'ov08x40 21-0036': The PixelArraySize property has been defaulted to 3856x2176
[6:28:38.751524432] [31091] ERROR V4L2 v4l2_subdevice.cpp:1192 'ov08x40 21-0036': Unable to get rectangle 1 on pad 0/0: Inappropriate ioctl for device
[6:28:38.751525852] [31091]  WARN CameraSensor camera_sensor_legacy.cpp:413 'ov08x40 21-0036': The PixelArrayActiveAreas property has been defaulted to (0, 0)/3856x2176
[6:28:38.751529265] [31091] ERROR V4L2 v4l2_subdevice.cpp:1192 'ov08x40 21-0036': Unable to get rectangle 0 on pad 0/0: Inappropriate ioctl for device
[6:28:38.751530448] [31091]  WARN CameraSensor camera_sensor_legacy.cpp:421 'ov08x40 21-0036': Failed to retrieve the sensor crop rectangle
[6:28:38.751531413] [31091]  WARN CameraSensor camera_sensor_legacy.cpp:427 'ov08x40 21-0036': The sensor kernel driver needs to be fixed
[6:28:38.751532329] [31091]  WARN CameraSensor camera_sensor_legacy.cpp:429 'ov08x40 21-0036': See Documentation/sensor_driver_requirements.rst in the libcamera sources for more information
[6:28:38.751658055] [31091]  WARN CameraSensorProperties camera_sensor_properties.cpp:538 No static properties available for 'ov08x40'
[6:28:38.751660329] [31091]  WARN CameraSensorProperties camera_sensor_properties.cpp:540 Please consider updating the camera sensor properties database
[6:28:38.751663318] [31091]  WARN CameraSensor camera_sensor_legacy.cpp:502 'ov08x40 21-0036': No sensor delays found in static properties. Assuming unverified defaults.
[6:28:38.752697596] [31091]  WARN IPAProxy ipa_proxy.cpp:192 Configuration file 'ov08x40.yaml' not found for IPA module 'simple', falling back to '/usr/share/libcamera/ipa/simple/uncalibrated.yaml'
[6:28:38.752702473] [31091] ERROR V4L2 v4l2_subdevice.cpp:1192 'ov08x40 21-0036': Unable to get rectangle 0 on pad 0/0: Inappropriate ioctl for device
[6:28:38.752704940] [31091]  WARN CameraSensor camera_sensor_legacy.cpp:881 'ov08x40 21-0036': The analogue crop rectangle has been defaulted to the active area size
[6:28:38.752712030] [31091]  WARN IPASoft soft_simple.cpp:104 IPASoft: Failed to create camera sensor helper for ov08x40
[6:28:38.752805290] [31091]  INFO Camera camera_manager.cpp:223 Adding camera '\_SB_.PC00.LNK1' for pipeline handler simple
Available cameras:
1: Internal front camera (\_SB_.PC00.LNK1)

The kernel log complains:

[50377.430456] usbcore: registered new interface driver usbio-bridge
[50377.431085] int3472-discrete INT3472:0c: cannot find GPIO chip INTC10B2:00, deferring
[50384.654616] int3472-discrete INT3472:0c: GPIO type 0x02 unknown; the sensor may not work
[50390.331549] ov08x40 i2c-OVTI08F4:00: supply dovdd not found, using dummy regulator
[50390.331578] ov08x40 i2c-OVTI08F4:00: supply avdd not found, using dummy regulator
[50390.331594] ov08x40 i2c-OVTI08F4:00: supply dvdd not found, using dummy regulator
[50426.752729] Intel CVS driver i2c-INTC10E0:00: cvs_common_probe: probed as i2c device
[50426.870990] Intel CVS driver i2c-INTC10E0:00: find_oem_prod_id: ACPI method OPID not found
[50426.879447] Intel CVS driver i2c-INTC10E0:00: magic number in dev response not supported
[50426.879449] Intel CVS driver i2c-INTC10E0:00: cvs_find_magic_num_support:Device protocol is 1.0
[50427.114737] Intel CVS driver i2c-INTC10E0:00: cvs_common_probe:Transfer of ownership success

Qcam displays a broken camera icon, and gives the following errors:

[6:29:33.389894804] [31166]  INFO eGL egl.cpp:349 EGL: GL_VERSION: OpenGL ES 3.2 NVIDIA 590.48.01
[6:29:36.386307462] [31166] ERROR eGL egl.cpp:165 glFrameBufferTexture2D error 36054
[6:29:36.392859771] [31166] ERROR eGL debayer_egl.cpp:527 Drawing scene fail 1282
[6:29:36.392870740] [31166] ERROR Debayer debayer_egl.cpp:557 debayerGPU failed
[6:29:36.407418566] [31166] ERROR eGL egl.cpp:165 glFrameBufferTexture2D error 36054
[6:29:36.412784085] [31166] ERROR eGL debayer_egl.cpp:527 Drawing scene fail 1282
[6:29:36.412792205] [31166] ERROR Debayer debayer_egl.cpp:557 debayerGPU failed
[6:29:36.438141348] [31166] ERROR eGL egl.cpp:165 glFrameBufferTexture2D error 36054
[6:29:36.440460487] [31166] ERROR eGL debayer_egl.cpp:527 Drawing scene fail 1282
[6:29:36.440470159] [31166] ERROR Debayer debayer_egl.cpp:557 debayerGPU failed
[6:29:36.472382058] [31166] ERROR eGL egl.cpp:165 glFrameBufferTexture2D error 36054
[6:29:36.474777766] [31166] ERROR eGL debayer_egl.cpp:527 Drawing scene fail 1282
[6:29:36.474787167] [31166] ERROR Debayer debayer_egl.cpp:557 debayerGPU failed
[6:29:56.466127553] [31164] FATAL default pipeline_handler.cpp:398 assertion "data->queuedRequests_.empty()" failed in stop()

[pinchartl]

Can you try the Qt rendering engine for qcam ? The GL rendering engine should work, but I don't know if anyone has tested it with nvidia drivers.

[jech]

If I run with -r qt, the output matches the default. If I run -r gles, it displays a black window instead of a broken camera icon. I haven't found a way to force the use of the iGPU.

[pinchartl]

So at least -r qt works, good :-)

I don't have an nvidia GPU so I can't investigate what happens. An option to select a particular GPU could also make sense, but that's not implemented. I'm curious, how do other applications handle that ? Maybe there's an environment variable to influences the GL loader to select a GPU ? It would seem weird to me if every application had to implement this selection manually.

[jech]

So at least -r qt works, good :-)

No, it doesn't : the window is completely black.

[pinchartl]

Ah, my bad, I misunderstood you. Does the camera produce black frames, or does it produce nothing at all ? You can try capturing frames with the cam tool.

[jech]

cam -c 1 -C doesn't produce anything useful, if that's what you mean.