Please attach the corresponding dmesg output. (In reply to Shih-Yuan Lee from comment #0) > While I am doing the tests with AC plugged in by `DRI_PRIME=1 glxgears > -info` and `DRI_PRIME=0 glxgears -info`, the system halts and then is forced > to shutdown automatically. To clarify, DRI_PRIME=1 glxgears works, the problem only occurs with DRI_PRIME=0 glxgears?