Well, I've updated the BIOS, but it does not change anything. For updating, I swapped my SSH with an old HDD with the OEM Windows. But still the result is the same, the value of USB charge is 1, and can't be changed. Here is the output you asked for:
sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date R0230DA 02/24/2015 ** Changed in: linux (Ubuntu) Status: Incomplete => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1461986 Title: can't change usb_charge attribute in /sys/devices/platform/sony-laptop To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1461986/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs