So I have been fighting a weird sound problem in the Lenovo Thinkpad t540p with newer kernels where the sound is in a weird startup state which sounded exactly like the problem descibed here
00:03.0 Audio device: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor HD Audio Controller (rev 06) Subsystem: Lenovo Device 2210 Flags: bus master, fast devsel, latency 0, IRQ 33 Memory at e1630000 (64-bit, non-prefetchable) [size=16K] Capabilities: [50] Power Management version 2 Capabilities: [60] MSI: Enable+ Count=1/1 Maskable- 64bit- Capabilities: [70] Express Root Complex Integrated Endpoint, MSI 00 Kernel driver in use: snd_hda_intel
The head-phones will sometimes go into mode and the only way to fix is drop the system reboot twice and it works again until the next reboot when it goes into mode again. Of course it could just be a bad hardware :) [though going to a 3.10 level kernel didn't seem to cause it.]
Might need to add ThinkPad t540p to the list
00:03.0 Audio device: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor HD Audio Controller (rev 06)
Subsystem: Lenovo Device 2210
Flags: bus master, fast devsel, latency 0, IRQ 33
Memory at e1630000 (64-bit, non-prefetchable) [size=16K]
Capabilities: [50] Power Management version 2
Capabilities: [60] MSI: Enable+ Count=1/1 Maskable- 64bit-
Capabilities: [70] Express Root Complex Integrated Endpoint, MSI 00
Kernel driver in use: snd_hda_intel
The head-phones will sometimes go into mode and the only way to fix is drop the system reboot twice and it works again until the next reboot when it goes into mode again. Of course it could just be a bad hardware :) [though going to a 3.10 level kernel didn't seem to cause it.]