asad@ubuntu-linux:~$ dmesg | grep fail
[ 0.000000] tsc: Fast TSC calibration failed
[ 0.583363] ACPI Error: [\_SB_.PCI0.LPCB.H_EC.ECWT] Namespace lookup failure, AE_NOT_FOUND (20150410/psargs-359)
[ 0.583367] ACPI Error: Method parse/execution failed [\_TZ_.FN00._ON_] (Node ffff8802560f30a0), AE_NOT_FOUND (20150410/psparse-536)
[ 0.583394] ACPI Error: [\_SB_.PCI0.LPCB.H_EC.ECWT] Namespace lookup failure, AE_NOT_FOUND (20150410/psargs-359)
[ 0.583396] ACPI Error: Method parse/execution failed [\_TZ_.FN00._ON_] (Node ffff8802560f30a0), AE_NOT_FOUND (20150410/psparse-536)
[ 0.612601] ACPI Error: [\_SB_.PCI0.LPCB.H_EC.ECRD] Namespace lookup failure, AE_NOT_FOUND (20150410/psargs-359)
[ 0.612605] ACPI Error: Method parse/execution failed [\_TZ_.TZ00._TMP] (Node ffff8802560f3820), AE_NOT_FOUND (20150410/psparse-536)
[ 0.612675] ACPI Error: [\_SB_.PCI0.LPCB.H_EC.ECRD] Namespace lookup failure, AE_NOT_FOUND (20150410/psargs-359)
[ 0.612678] ACPI Error: Method parse/execution failed [\_TZ_.TZ00._TMP] (Node ffff8802560f3820), AE_NOT_FOUND (20150410/psparse-536)
[ 0.612728] ACPI Error: [\_SB_.PCI0.LPCB.H_EC.ECRD] Namespace lookup failure, AE_NOT_FOUND (20150410/psargs-359)
[ 0.612730] ACPI Error: Method parse/execution failed [\_TZ_.TZ01._TMP] (Node ffff8802560f38e8), AE_NOT_FOUND (20150410/psparse-536)
[ 0.612761] ACPI Error: [\_SB_.PCI0.LPCB.H_EC.ECRD] Namespace lookup failure, AE_NOT_FOUND (20150410/psargs-359)
[ 0.612763] ACPI Error: Method parse/execution failed [\_TZ_.TZ01._TMP] (Node ffff8802560f38e8), AE_NOT_FOUND (20150410/psparse-536)
[ 0.622460] usb: failed to peer usb2-port4 and usb1-port3 by location (usb2-port4:none) (usb1-port3:usb2-port3)
[ 0.622461] usb usb2-port4: failed to peer to usb1-port3 (-16)
[ 9.824427] i2c_hid i2c-DLL0675:00: failed to retrieve report from device.
[ 9.832404] i2c_hid i2c-DLL0675:00: failed to retrieve report from device.
[ 9.833223] i2c_hid i2c-DLL0675:00: failed to retrieve report from device.
[ 9.835017] i2c_hid i2c-DLL0675:00: failed to retrieve report from device.