Every time I touch the screen on cyan, the driver logs an error:

2721996:2024-03-12T03:42:18.594818+01:00 ERR kernel: [  265.513623] elants_i2c i2c-ELAN0001:00: unknown packet ff ff ff ff
2721997:2024-03-12T03:42:18.598760+01:00 ERR kernel: [  265.517775] elants_i2c i2c-ELAN0001:00: unknown packet ff ff ff ff

The touchscreen still works correctly, but we shouldn't be seeing these errors during normal operation.