kernel configuration: machine on Linux v4.17-rc2 makes creaky sounds

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I'm on a laptop with an i7-7500U cpu, running Arch. I have compiled the latest (as of this writing) 4.17-rc2 kernel from Linus' source tree using two different config files:



  • a small one

and



  • a larger one

My problem: when booting the small-config kernel random activity (even touching the touchpad, for instance) results in a persistent creaking electrical sound resonating from inside the machine. It is louder when the battery is in, but can be heard even while on AC without a battery.



The problem does not manifest (or rather the sound is there occasionally but much reduced) when booting the larger-config kernel.



I am looking mostly for ideas of which config options might affect this. I've tried to replicate the ACPI-related configuration from the larger file into the smaller one for instance, in the hope that that would do it. To no avail.



Edit:



The pastebin links are currently out of action. Alternatives:



  • small config


  • large one

Edit 2:



In response to one of the questions below: the hard drive is an SSD (well two, but both SSDs).



I understand it's hardware, but I can't tell specifically which part (it sounds electrical in nature). Perhaps capacitors, etc., and I am sure the configuration makes the difference (having tested both kernels). Perhaps through the ACPI system, but I do not have the expertise to determine this.



Re: the fan: this does not seem to be it. I can reproduce the sound I am referring to consistently by simply holding my finger(s) on the touchpad. The fan never kicks in, and when it does under load the sound it makes is easily distinguishable from the stray creaks.



P.S.



The pastebin links seem to be up again, so I am disabling the alternatives.



Edit 3:



Re: a second reply received below:



It does not seem to be a moving part of any kind (I am out of options for what could be moving in there..). Rather, it must be something more akin to this.



I am not claiming to have gotten in any way closer to resolving the issue or tracking it down, but the linked discussion seems pertinent at least in that it confirms that components in an electrical circuit do not need to be "moving" to produce sound.



Edit 4:



I’ve also just found a post on a Dell forum that describes a problem that appears to be very similar to mine.



The sound can be described as a ‘buzz’ in my case too, and it also comes from the upper left side of the chassis.







share|improve this question





















  • It's probably your hard drive, as software doesn't "creak" . What type of disk do you have in your laptop? The other suspect is your system's fan.
    – L.Ray
    Apr 28 at 13:59










  • Thanks for the replies! I've added more info to the message; it does not seem to me to be traceable to either the hard drive(s), whicha re SSDs, or to the fan, which upon starting sounds smooth.
    – grobber
    Apr 28 at 16:13











  • Well, your creaking must be coming from a moving part. The only other moving part in (some) modern laptops is a CD/DVD/Blue-ray drive. Do you have one of those, and could that be the source?
    – L.Ray
    Apr 28 at 17:17










  • No optical drives, no
    – grobber
    Apr 28 at 21:09










  • Regarding moving parts: see also the link in Edit 3. This seems to be something along those lines. At the very least, that thread suggests movement is not an absolute must for this to occur.
    – grobber
    Apr 28 at 21:16














up vote
1
down vote

favorite












I'm on a laptop with an i7-7500U cpu, running Arch. I have compiled the latest (as of this writing) 4.17-rc2 kernel from Linus' source tree using two different config files:



  • a small one

and



  • a larger one

My problem: when booting the small-config kernel random activity (even touching the touchpad, for instance) results in a persistent creaking electrical sound resonating from inside the machine. It is louder when the battery is in, but can be heard even while on AC without a battery.



The problem does not manifest (or rather the sound is there occasionally but much reduced) when booting the larger-config kernel.



I am looking mostly for ideas of which config options might affect this. I've tried to replicate the ACPI-related configuration from the larger file into the smaller one for instance, in the hope that that would do it. To no avail.



Edit:



The pastebin links are currently out of action. Alternatives:



  • small config


  • large one

Edit 2:



In response to one of the questions below: the hard drive is an SSD (well two, but both SSDs).



I understand it's hardware, but I can't tell specifically which part (it sounds electrical in nature). Perhaps capacitors, etc., and I am sure the configuration makes the difference (having tested both kernels). Perhaps through the ACPI system, but I do not have the expertise to determine this.



Re: the fan: this does not seem to be it. I can reproduce the sound I am referring to consistently by simply holding my finger(s) on the touchpad. The fan never kicks in, and when it does under load the sound it makes is easily distinguishable from the stray creaks.



P.S.



The pastebin links seem to be up again, so I am disabling the alternatives.



Edit 3:



Re: a second reply received below:



It does not seem to be a moving part of any kind (I am out of options for what could be moving in there..). Rather, it must be something more akin to this.



I am not claiming to have gotten in any way closer to resolving the issue or tracking it down, but the linked discussion seems pertinent at least in that it confirms that components in an electrical circuit do not need to be "moving" to produce sound.



Edit 4:



I’ve also just found a post on a Dell forum that describes a problem that appears to be very similar to mine.



The sound can be described as a ‘buzz’ in my case too, and it also comes from the upper left side of the chassis.







share|improve this question





















  • It's probably your hard drive, as software doesn't "creak" . What type of disk do you have in your laptop? The other suspect is your system's fan.
    – L.Ray
    Apr 28 at 13:59










  • Thanks for the replies! I've added more info to the message; it does not seem to me to be traceable to either the hard drive(s), whicha re SSDs, or to the fan, which upon starting sounds smooth.
    – grobber
    Apr 28 at 16:13











  • Well, your creaking must be coming from a moving part. The only other moving part in (some) modern laptops is a CD/DVD/Blue-ray drive. Do you have one of those, and could that be the source?
    – L.Ray
    Apr 28 at 17:17










  • No optical drives, no
    – grobber
    Apr 28 at 21:09










  • Regarding moving parts: see also the link in Edit 3. This seems to be something along those lines. At the very least, that thread suggests movement is not an absolute must for this to occur.
    – grobber
    Apr 28 at 21:16












up vote
1
down vote

favorite









up vote
1
down vote

favorite











I'm on a laptop with an i7-7500U cpu, running Arch. I have compiled the latest (as of this writing) 4.17-rc2 kernel from Linus' source tree using two different config files:



  • a small one

and



  • a larger one

My problem: when booting the small-config kernel random activity (even touching the touchpad, for instance) results in a persistent creaking electrical sound resonating from inside the machine. It is louder when the battery is in, but can be heard even while on AC without a battery.



The problem does not manifest (or rather the sound is there occasionally but much reduced) when booting the larger-config kernel.



I am looking mostly for ideas of which config options might affect this. I've tried to replicate the ACPI-related configuration from the larger file into the smaller one for instance, in the hope that that would do it. To no avail.



Edit:



The pastebin links are currently out of action. Alternatives:



  • small config


  • large one

Edit 2:



In response to one of the questions below: the hard drive is an SSD (well two, but both SSDs).



I understand it's hardware, but I can't tell specifically which part (it sounds electrical in nature). Perhaps capacitors, etc., and I am sure the configuration makes the difference (having tested both kernels). Perhaps through the ACPI system, but I do not have the expertise to determine this.



Re: the fan: this does not seem to be it. I can reproduce the sound I am referring to consistently by simply holding my finger(s) on the touchpad. The fan never kicks in, and when it does under load the sound it makes is easily distinguishable from the stray creaks.



P.S.



The pastebin links seem to be up again, so I am disabling the alternatives.



Edit 3:



Re: a second reply received below:



It does not seem to be a moving part of any kind (I am out of options for what could be moving in there..). Rather, it must be something more akin to this.



I am not claiming to have gotten in any way closer to resolving the issue or tracking it down, but the linked discussion seems pertinent at least in that it confirms that components in an electrical circuit do not need to be "moving" to produce sound.



Edit 4:



I’ve also just found a post on a Dell forum that describes a problem that appears to be very similar to mine.



The sound can be described as a ‘buzz’ in my case too, and it also comes from the upper left side of the chassis.







share|improve this question













I'm on a laptop with an i7-7500U cpu, running Arch. I have compiled the latest (as of this writing) 4.17-rc2 kernel from Linus' source tree using two different config files:



  • a small one

and



  • a larger one

My problem: when booting the small-config kernel random activity (even touching the touchpad, for instance) results in a persistent creaking electrical sound resonating from inside the machine. It is louder when the battery is in, but can be heard even while on AC without a battery.



The problem does not manifest (or rather the sound is there occasionally but much reduced) when booting the larger-config kernel.



I am looking mostly for ideas of which config options might affect this. I've tried to replicate the ACPI-related configuration from the larger file into the smaller one for instance, in the hope that that would do it. To no avail.



Edit:



The pastebin links are currently out of action. Alternatives:



  • small config


  • large one

Edit 2:



In response to one of the questions below: the hard drive is an SSD (well two, but both SSDs).



I understand it's hardware, but I can't tell specifically which part (it sounds electrical in nature). Perhaps capacitors, etc., and I am sure the configuration makes the difference (having tested both kernels). Perhaps through the ACPI system, but I do not have the expertise to determine this.



Re: the fan: this does not seem to be it. I can reproduce the sound I am referring to consistently by simply holding my finger(s) on the touchpad. The fan never kicks in, and when it does under load the sound it makes is easily distinguishable from the stray creaks.



P.S.



The pastebin links seem to be up again, so I am disabling the alternatives.



Edit 3:



Re: a second reply received below:



It does not seem to be a moving part of any kind (I am out of options for what could be moving in there..). Rather, it must be something more akin to this.



I am not claiming to have gotten in any way closer to resolving the issue or tracking it down, but the linked discussion seems pertinent at least in that it confirms that components in an electrical circuit do not need to be "moving" to produce sound.



Edit 4:



I’ve also just found a post on a Dell forum that describes a problem that appears to be very similar to mine.



The sound can be described as a ‘buzz’ in my case too, and it also comes from the upper left side of the chassis.









share|improve this question












share|improve this question




share|improve this question








edited May 3 at 22:39
























asked Apr 28 at 13:10









grobber

294




294











  • It's probably your hard drive, as software doesn't "creak" . What type of disk do you have in your laptop? The other suspect is your system's fan.
    – L.Ray
    Apr 28 at 13:59










  • Thanks for the replies! I've added more info to the message; it does not seem to me to be traceable to either the hard drive(s), whicha re SSDs, or to the fan, which upon starting sounds smooth.
    – grobber
    Apr 28 at 16:13











  • Well, your creaking must be coming from a moving part. The only other moving part in (some) modern laptops is a CD/DVD/Blue-ray drive. Do you have one of those, and could that be the source?
    – L.Ray
    Apr 28 at 17:17










  • No optical drives, no
    – grobber
    Apr 28 at 21:09










  • Regarding moving parts: see also the link in Edit 3. This seems to be something along those lines. At the very least, that thread suggests movement is not an absolute must for this to occur.
    – grobber
    Apr 28 at 21:16
















  • It's probably your hard drive, as software doesn't "creak" . What type of disk do you have in your laptop? The other suspect is your system's fan.
    – L.Ray
    Apr 28 at 13:59










  • Thanks for the replies! I've added more info to the message; it does not seem to me to be traceable to either the hard drive(s), whicha re SSDs, or to the fan, which upon starting sounds smooth.
    – grobber
    Apr 28 at 16:13











  • Well, your creaking must be coming from a moving part. The only other moving part in (some) modern laptops is a CD/DVD/Blue-ray drive. Do you have one of those, and could that be the source?
    – L.Ray
    Apr 28 at 17:17










  • No optical drives, no
    – grobber
    Apr 28 at 21:09










  • Regarding moving parts: see also the link in Edit 3. This seems to be something along those lines. At the very least, that thread suggests movement is not an absolute must for this to occur.
    – grobber
    Apr 28 at 21:16















It's probably your hard drive, as software doesn't "creak" . What type of disk do you have in your laptop? The other suspect is your system's fan.
– L.Ray
Apr 28 at 13:59




It's probably your hard drive, as software doesn't "creak" . What type of disk do you have in your laptop? The other suspect is your system's fan.
– L.Ray
Apr 28 at 13:59












Thanks for the replies! I've added more info to the message; it does not seem to me to be traceable to either the hard drive(s), whicha re SSDs, or to the fan, which upon starting sounds smooth.
– grobber
Apr 28 at 16:13





Thanks for the replies! I've added more info to the message; it does not seem to me to be traceable to either the hard drive(s), whicha re SSDs, or to the fan, which upon starting sounds smooth.
– grobber
Apr 28 at 16:13













Well, your creaking must be coming from a moving part. The only other moving part in (some) modern laptops is a CD/DVD/Blue-ray drive. Do you have one of those, and could that be the source?
– L.Ray
Apr 28 at 17:17




Well, your creaking must be coming from a moving part. The only other moving part in (some) modern laptops is a CD/DVD/Blue-ray drive. Do you have one of those, and could that be the source?
– L.Ray
Apr 28 at 17:17












No optical drives, no
– grobber
Apr 28 at 21:09




No optical drives, no
– grobber
Apr 28 at 21:09












Regarding moving parts: see also the link in Edit 3. This seems to be something along those lines. At the very least, that thread suggests movement is not an absolute must for this to occur.
– grobber
Apr 28 at 21:16




Regarding moving parts: see also the link in Edit 3. This seems to be something along those lines. At the very least, that thread suggests movement is not an absolute must for this to occur.
– grobber
Apr 28 at 21:16















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