After experiencing warmer weather and hence a warmer start-up temperature for my laptop, I discovered that the sound system would not work at all and would not respond to a re-boot. In order to prepare the laptop for a possible return under the guarantee, I re-installed Ubuntu 14.04.02 LTS and confirmed the fault by running the built-in diagnostic (selected through the options obtained by holding F12 on start-up). This caused the circuit board to warm up appreciably and, surprise, surprise, the audio system returned to functionality on re-booting. However, its functionality did not remain as the laptop cooled to normal ambient temperature.
I discussed these symptoms with Dell Technical support who offered to send out a Technician (Engineer?) to change the sound board. He arrived the next day and changed the board, explaining that sometimes, very rarely, there might be a dry joint which is impossible to see visually. On switch on, the sound worked perfectly. To date, I have not been able to duplicate any faulty operation whatsoever including starting up from cold (the weather is now cooler) and allowing the laptop to warm up by running the diagnostics or running processor-intensive apps light Flightgear that cause the fan to come on. It would seem that all my previously reported problems were down to a possible dry joint. Three cheers to Dell Technical support who responded to my query by sending around a Technician who was able to complete the repair. I wish that I had spoken to Technical support earlier although I did not want to be in the situation of having the laptop returned with "No Fault Found" especially when the fault was inconsistent and apparently related to the operating system. Thanks to all those in this forum who took the time to look at my fault report and to confirm the operation of the software. I now have the laptop running Ubuntu 15.04 and it preforms beautifully. I look forward to the next release -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1408110 Title: [XPS13 9333, Realtek ALC3661, Speaker, Internal] fails after a while To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1408110/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
