Investigations and search around the existing topics have led us to identify the /etc/profile.d/jetson_env.sh hence jtop as the component triggering the issue, as in not observing the error popup when jtop is uninstalled.
While still investigating, it remains nebulous to us why we started observing this. Power supply related testings were performed recently, although it is not clear to us if a causal link exists.
Nothing new seems to have been installed which could have triggered the issue around the time we started oberving this. Jtop was installed 1.5 yrs ago.
Yes indeed, thanks. The rephrased question is what is the /dev/tegra_dc_ctrl device implementing? Given that the cdev permissions have not changed, what could cause any 3rd party tool to fail accessing the device?
Tegra dc means tegra display controller. These are the display driver to init and enable display. nvdc is a userspace library that can communicate between userspace and kernel driver.
Actually, this is not my first time seeing this error coming out. However, what I still don’t know is how you guys hit this issue or how to reproduce this issue.
Could you clarify what is the exact scenario to hit this error? When you opened jtop, it would immediately show this? Or even the desktop gui fails to show and gives you this error?
What is your method to resolve it? by uninstalling jtop?