Originally Posted by rkomar
Is it definitely the case that the kernel doesn't support devpts? On my Pocketbook device, the kernel supports it, but the OS wasn't set up for it. I got root access and fixed that by changing the permissions on /dev/ptmx and by adding the option gid=5 for devpts in /etc/fstab. Perhaps that's all that is necessary on the Onyx devices, as well.
If you want to mount the devpts filesystem, the kernel responds with something like "unknown filesystem type devpts" and devpts is not available as a module.