* I was seeing the 'Dl' state of indicator-multiload when the display updating was stalled.
* Grabbing some stack traces with gdb, one of the threads was stuck in a read() call.
* Following the few stack symbols, and reading source led to update() in cpufreqprovider.vala.
* Experimenting (and luck?) led to the discovery that reading all the scaling_cur_freq files unfroze the display.
More info:
* I was seeing the 'Dl' state of indicator-multiload when the display updating was stalled. .vala.
* Grabbing some stack traces with gdb, one of the threads was stuck in a read() call.
* Following the few stack symbols, and reading source led to update() in cpufreqprovider
* Experimenting (and luck?) led to the discovery that reading all the scaling_cur_freq files unfroze the display.