On Wed, 13 Apr 2022 15:56:20 -0700 Samuel Sieb wrote: Seems like it would have to be moving parts like that. Or maybe there is a screech virus playing screech noises from the speakers :-).

Thanks very much! I appear to have not got the emails before this one, so I will try and answer here. Also, in the meantime, I run tests from the BIOS but all passed (except for the battery which has now been removed). There is no DVD. It is possible that it is the fan, and that is my suspicion but I can not tell. It does happen only when there is some sort of activity in the disk. This is not the usual mild rattling sound that happens almost all the time, but screeching at times. Agreed, but the BIOS passed it FWIW. The fan also appears to blow air all right, with a lot of gusto, but that is usual. Possible, but it is not in the speakers. And sound plays fine. Please feel free to ask. Thank you again!! Best wishes, Ranjan

2022-04-14 4:03 UTC+02:00, Ranjan Maitra <mlmaitra(a)gmx.com&gt;: What happens if you exercise the processor for minutes with something that doesn't involve I/O?

On Thu, 14 Apr 2022 10:25:41 -0500 Ranjan Maitra wrote: Earlier in this thread didn't you (or someone) mention the "normal" rattling noise when doing disk I/O? If that is normal, then the disk isn't an SSD drive - they don't make any noise at all. Screeching is normal for a failing spinning disk.

On Thu, Apr 14, 2022 at 11:26 AM Ranjan Maitra <mlmaitra(a)gmx.com&gt; wrote: I know you indicated it is a SSD, but by any chance is it one of the older hybrid drives? The ones that combine a spinning disk with a large non-volatile cache? Is there a way you could record the sound and post it somewhere? People might have a better idea what is making the noise if they could hear it for themselves.

Hi Ranjan, SSDs do not use very much power, and therefore even the largest ones do not require fans.  I've never heard of one that does need that much cooling.  The part# that you mention is a waay-overpriced (US$360 on their website) Dell 512GB M.2 drive, that definitely has no fan. Maybe you should order the failing fan from their parts list, and replace it instead. -- John Mellor On 2022-04-14 23:05, Ranjan Maitra wrote: > On Thu Apr14'22 12:22:14PM, Go Canes wrote: >> From: Go Canes <letsgonhlcanes0(a)gmail.com&gt; >> Date: Thu, 14 Apr 2022 12:22:14 -0400 >> To: Community support for Fedora users <users(a)lists.fedoraproject.org&gt; >> Reply-To: Community support for Fedora users <users(a)lists.fedoraproject.org&gt; >> Subject: Re: OT: laptop SSD(?) makes screeching sounds >> >> On Thu, Apr 14, 2022 at 11:26 AM Ranjan Maitra <mlmaitra(a)gmx.com&gt; wrote: >>> However, while writing this email in mutt (which involves some IO), the fan ended running, and the screeching is back and continues on even though the fan does not appear to be running. >> I know you indicated it is a SSD, but by any chance is it one of the >> older hybrid drives? The ones that combine a spinning disk with a >> large non-volatile cache? > It is a SSD, here is the part number: 400-AVHW (512GB Solid State Drive) as per the quote from almost four years ago. > >> Is there a way you could record the sound and post it somewhere? >> People might have a better idea what is making the noise if they could >> hear it for themselves. > Cleaning the fan a bit with air, and then what I have done is to hook it to a monitor and put it upside down (and lid closed with laptop screen turned off) so that there is more air circulating has meant a remarkably quiet time. Perhaps the cleaning also helped. Let us see. > > Many thanks for your help! > > Best wishes, > Ranjan > _______________________________________________ > users mailing list -- users(a)lists.fedoraproject.org > To unsubscribe send an email to users-leave(a)lists.fedoraproject.org > Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ > List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines > List Archives: https://lists.fedoraproject.org/archives/list/users@lists.fedoraproject.org > Do not reply to spam on the list, report it: https://pagure.io/fedora-infrastructure

On Fri, 15 Apr 2022 at 10:42, Ranjan Maitra <mlmaitra(a)gmx.com&gt; wrote: SSD's can get hot, but use thermal throttling to prevent damage. Data intensive applications do see slowdowns, so you do see cooling in SSD RAID arrays, and you can get ad-on cooling thermal pads, etc. number out because of the question whether it was a SSD. It seems to be, perhaps a bit old. Dell systems generally have good heat management, so your SSD may have benefitted from the system cooling fans. My former work (optical remote sensing) involved moving large volumes of data. We used to have a lot of disk failures, but in the last 10 years rotating disks rarely failed until a few days past the warranty period. I routinely replaced drives at end-or-warranty. In your position, I would consider replacing the SSD with a current model and put the old one in an external case for use as "scratch space" or backups. > > Maybe you should order the failing fan from their parts list, and > replace it > > instead. > Yes, we are getting a new(?) fan pack from Dell, since it is under > warranty for another month. Probably will be here next week. The last Dell fan I got under warranty was delivered to a depot run by a "no-name" courier. That was a memorable experience, At the depot a long line of customers were waiting to pick up packages, but the person at the front was from a local hospital and looking for a package running up against a time constraint. Imagine a warehouse piled high with a jumble of packages and all hands frantically searching for the missing item. -- George N. White III

On Wed, 13 Apr 2022 at 23:04, Ranjan Maitra <mlmaitra(a)gmx.com&gt; wrote: but I can not tell. It does happen only when there is some sort of activity in the disk. This is not the usual mild rattling sound that happens almost all the time, but screeching at times. Modern manufacturing is very precise and reproducible, so a given model laptop will often have certain failure modes. Do you use a docking station or Type C USB dongle? Have you seen Loud fan noise and high CPU usage occurs with the XPS 13 9370 | Dell Canada <https://www.dell.com/support/kbdoc/en-ca/000143849/loud-fan-noise-and-hig...? (could be only models sold in Canada, or there may be a similar article for other countries). "Mild rattling sound" could be a bad bearing, screeching would be a failed bearing causing contact on surfaces that should be separated. Hold an air vent up close (but not too close!) your ear. -- George N. White III

On Wed, 2022-04-13 at 17:52 -0500, Ranjan Maitra wrote: Since we can't hear it, we can only guess. The obvious things are motorised (fans, and drives), the less obvious ones are whines from switch-mode power supplies (more like loud mosquito noise). Although a laptop has an external mains power supply, there can be high voltage generators for LCD backlights. If the noise changes with screen brightness, I'd suspect the latter. But if the noise changes with differing CPU loads, I'd suspect a cooling fan (there may be more than one). Disc drive noises should be nearly consistent, but will change as the device is being accessed. It's hard to locate some noises, so using a DIY stethoscope is often the easiest way to narrow them down. Just a single piece of flexible pipe in one ear and moving the other end around various parts of the equipment. I've fixed some very hard to trace squealing noises that way several times. Noisy cooling fans may be fixable (if you can get into the bearings), but often it's simplest and best to replace them. Though I know that's hard to do on a laptop. I've a fan somewhere which is all melted, it came from a graphics card. It eventually seized up and then overheated. Since this was a desktop PC, we simply fixed an ordinary PC fan in the case that blew all over the graphics card. It actually did a better cooling job than the original tiny fan that only cooled one bit of a heatsink. -- uname -rsvp Linux 3.10.0-1160.62.1.el7.x86_64 #1 SMP Tue Apr 5 16:57:59 UTC 2022 x86_64 Boilerplate: All unexpected mail to my mailbox is automatically deleted. I will only get to see the messages that are posted to the mailing list.