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hexdump0815 / linux-mainline-on-arm-chromebooks

running linux mainline on arm chromebooks - for example: samsung xe303c12 and xe503c12 (snow and peach), acer c100, c101 and c201 (veyron speedy, minnie etc. and gru bob and kevin), medion s2013 and s2015 (veyron jaq, mighty etc.), acer cb5 311 (nyan big), lenovo n23, acer r13 (oak elm and hana), lenovo duet (kukui krane) and most probably many many more over time ...
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vidioc_try_fmt:379: Unsupported format for destination. #23

Open Marietto2008 opened 7 months ago

Marietto2008 commented 7 months ago

Hello my friend.

Have you ever seen this error inside the log of your ARM Chromebook model XE303C12 ?

[ 2416.631903] vidioc_try_fmt:379: Unsupported format for destination.
[ 2416.631937] vidioc_try_fmt:379: Unsupported format for destination.
[ 2437.287065] vidioc_g_selection:764: Can not get compose information
[ 2437.294194] vidioc_g_fmt:347: Format could not be read
[ 2437.300364] vidioc_g_selection:764: Can not get compose information
[ 2437.301979] vidioc_g_fmt:347: Format could not be read
[ 2441.711496] vidioc_g_selection:764: Can not get compose information
[ 2441.713115] vidioc_g_fmt:347: Format could not be read
[ 2455.174443] vidioc_g_selection:764: Can not get compose information
[ 2455.175663] vidioc_g_fmt:347: Format could not be read

I'm not sure but they could be correlated with the warnings I get when I try to watch an mp4 file using SMPlayer :

libEGL warning : egl failed to create dri2 screen
libEGL warning : failed to get driver name for fd -1
libEGL warning : MESA-LOADER : failed to retrieve device informations

I'm looking for the technical reason why,when I play an mp4 video with VLC or SMplayer (and for sure other multimedia players),the video proceeds in spurts.

hexdump0815 commented 6 months ago

i have never seen this and it might be related to video decoding, which is not really supported out of the box on this chromebook - i think there was some successful effort to make it work on the bigger exynos peach chromebooks in the postmarketos project, but i did not look at it yet and i'm not sure how much that applies to the snow chromebook as well

Marietto2008 commented 6 months ago

Are you able to watch an mp4 video fluidly ?

hexdump0815 commented 6 months ago

i did not test it, but i assume it would be cpu software decoded, so not that fluid and with high cpu usage ...