Just some more reporting about this issue: - The command "sudo hdparm -I /dev/sda" shows this line about APM:
Advanced power management level: unknown setting (0x80fe) The 0xfe byte is the 254 value I set whith the -B command in hexadecimal, but i do not understand the 0x80 byte and why it tells "unknown setting". - The command " sudo smartctl -d ata -a /dev/sda" shows also other values, some of them very high and incrementing: Raw_Read_Error_Rate, Seek_Error_Rate, Unknown_Attribute (with ID# 190), Hardware_ECC_Recovered Reading in internet I found not so clear info about them; for example, the Raw_Read_Error_Rate here says lower is better: http://en.wikipedia.org/wiki/Self-Monitoring%2C_Analysis%2C_and_Reporting_Technology while here (linked from the above wikipedia page) it says the opposite: http://www.ariolic.com/activesmart/smart-attributes/raw-read-error-rate.html how can we have more complete information about these parameters? -- default value in power.sh potentially kills laptop disks https://bugs.launchpad.net/bugs/59695 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs