[meta-freescale] Problem with touchscreen Display 1366x768 with Qt 5.9 and eglfs
benjamin.federau at basyskom.com
Tue Jul 11 06:16:21 PDT 2017
the bpp was set to 16, so I set it as you wrote to 32. But the Qt application still crashes with "EGL Error : Could not create the egl surface: error = 0x3003"
So on our setup a Qt application with eglfs works with a 1366x768 resolution?
After setting the bpp I get a Kernel message, jfyi
[ 198.087193] mxc_sdc_fb fb at 0: 1366x768 h_sync,r,l: 40,110,220 v_sync,l,u: 5,5,20 pixclock=83125000 Hz
I'm not sure if I understand the thing with the burst size you mentioned.
Betreff: Re: [meta-freescale] Problem with touchscreen Display 1366x768 with Qt 5.9 and eglfs
I met the same kind of error recently. The "bit per pixel" of the framebuffer interface should be 32, you can check/change the value in /sys/class/graphic/fb[x]/bits_per_pixel. Default bpp can be specified in DTS.
I also remember that IPU configure DMA with burst size and each line will must be a multiple of this burst size. This may be related with your error for line width = 1366.
Le 2017-07-11 13:58, Benjamin Federau a écrit : Hello,
I try to get my 10'' Chalkboard touchscreen (resolution 1366x768) running with a i.MX6 DualLite Colibri using Qt 5.9 and eglfs.
When I start my Qt application on the device it crashes with "Error : Could not create the egl surface: error = 0x3003".
If I set the resolution to 1280x720 for the display the Qt application starts.
I have read that the 1366x768 can cause some problems, but does someone ever got a Qt application with eglfs running on that resolution?
Thanks and regards
M.Sc. Benjamin Federau
Robert-Bosch-Str. 7 | 64293 Darmstadt | Germany
benjamin.federau at basyskom.com | www.basyskom.com
Handelsregister: Darmstadt HRB 9352
Geschaeftsfuehrung: Dr.-Ing. Eva Brucherseifer, Heike Ziegler
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