[libcamera-devel] Failed to commit atomic request: Invalid argument

[Kieran Bingham]

Quoting Eric Curtin (2021-10-29 12:38:46)
> Hi Guys,
> 
> Still struggling to get the display working on 2 different fedora 34 laptops.
> The first problem I run into is:

Just ... checking... By on 'laptops' you mean - without running a
GUI/Wayland/X ?

This cam drm support is for direct render when a GUI isn't available.
If a graphical environment is running, it will have ownership of the
screen.

> "Failed to commit atomic request: Invalid argument"
> 
> This occurs when drmModeAtomicCommit is called with  these flags set:
> 
> DRM_MODE_ATOMIC_ALLOW_MODESET | DRM_MODE_PAGE_FLIP_EVENT |
> DRM_MODE_ATOMIC_NONBLOCK
> 
> in the drmFlags.
> 
> Then we go from:
> 
> drmModeAtomicCommit -> DRM_IOCTL -> drmIoctl -> ioctl
> 
> and return EINVAL. Anybody have an idea what could be going wrong here?
> Are the flags ok in this case etc.?
> 
> Some version info and other info on how I am running this:
> 
> $ rpm -qa | grep libdrm
> libdrm-2.4.107-1.fc34.x86_64
> libdrm-devel-2.4.107-1.fc34.x86_64
> libdrm-debugsource-2.4.107-1.fc34.x86_64
> libdrm-debuginfo-2.4.107-1.fc34.x86_64
> 
> $ uname -a
> Linux fedora 5.14.13-200.fc34.x86_64 #1 SMP Mon Oct 18 12:39:31 UTC
> 2021 x86_64 x86_64 x86_64 GNU/Linux
> 
> sudo LD_LIBRARY_PATH=./build/src/ipa/ipu3:./build/src/ipa/raspberrypi:./build/src/ipa/rkisp1:./build/src/ipa/vimc:./build/src/libcamera:./build/src/libcamera/base:./build/src/libcamera/base/libcamera-base.so.0.0.0.p:./build/src/libcamera/libcamera.so.0.0.0.p
> ./build/src/cam/cam -c 1 -C16 -DeDP-1 -s

You shouldn't need to set LD_LIBRARY_PATH for this. Meson links the
binaries to the built location, and updates them when installing.

Have you set LD_LIBRARY_PATH due to an issue you faced?


> pixelformat=YUYV,height=1080,width=1920
> [24:13:06.877580453] [12783]  INFO IPAManager ipa_manager.cpp:138
> libcamera is not installed. Adding
> '/home/ecurtin/git/libcamera/build/src/ipa' to the IPA search path
> [24:13:06.878456861] [12783]  INFO Camera camera_manager.cpp:293
> libcamera v0.0.0+3205-8bba804b
> Using camera \_SB_.PCI0.XHC_.RHUB.HS01-1:1.0-046d:0843 as cam0
> [24:13:07.080928044] [12783]  INFO Camera camera.cpp:945 configuring
> streams: (0) 1920x1080-YUYV
> Using KMS plane 169, CRTC 236, connector eDP-1 (239)

Seeing this though makes me think it probably got far enough so it must
be expected to work.

> cam0: Capture 16 frames
> Failed to commit atomic request: Invalid argument

But without further debug, I'm not sure I can help on this one yet I'm
afraid.

> 87188.356981 (0.00 fps) cam0-stream0 seq: 000000 bytesused: 4147200
> 87188.581003 (4.46 fps) cam0-stream0 seq: 000001 bytesused: 4147200
> 87188.781009 (5.00 fps) cam0-stream0 seq: 000002 bytesused: 4147200
> 87188.981007 (5.00 fps) cam0-stream0 seq: 000003 bytesused: 4147200
> 87189.181009 (5.00 fps) cam0-stream0 seq: 000004 bytesused: 4147200
> 87189.381002 (5.00 fps) cam0-stream0 seq: 000005 bytesused: 4147200
> 87189.577004 (5.10 fps) cam0-stream0 seq: 000006 bytesused: 4147200
> 87189.776999 (5.00 fps) cam0-stream0 seq: 000007 bytesused: 4147200
> 87189.977034 (5.00 fps) cam0-stream0 seq: 000008 bytesused: 4147200
> 87190.177013 (5.00 fps) cam0-stream0 seq: 000009 bytesused: 4147200
> 87190.377072 (5.00 fps) cam0-stream0 seq: 000010 bytesused: 4147200
> 87190.577016 (5.00 fps) cam0-stream0 seq: 000011 bytesused: 4147200
> 87190.777031 (5.00 fps) cam0-stream0 seq: 000012 bytesused: 4147200
> 87190.973012 (5.10 fps) cam0-stream0 seq: 000013 bytesused: 4147200
> 87191.173030 (5.00 fps) cam0-stream0 seq: 000014 bytesused: 4147200
> 87191.373034 (5.00 fps) cam0-stream0 seq: 000015 bytesused: 4147200
> Failed to stop display pipeline: Invalid argument
> Failed to stop frame sink
> 
> Is mise le meas/Regards,
> 
> Eric Curtin
>