LinuxQuestions.org
Latest LQ Deal: Latest LQ Deals
Go Back   LinuxQuestions.org > Forums > Linux Forums > Linux - Distributions > Slackware
User Name
Password
Slackware This Forum is for the discussion of Slackware Linux.

Notices


Reply
  Search this Thread
Old 06-30-2020, 01:50 AM   #1
Gerswing
LQ Newbie
 
Registered: Jun 2020
Distribution: Slackware
Posts: 4

Rep: Reputation: Disabled
Slackware 14.2 on Acer Predator 17 G5-793 V1.06 Fan Issue


First post so please be patient with me. I have been running Slackware 14.2 on an Acer Predator 17 G5-793 V1.06 for several years. With the acer-wmi module, I have access to the touchpad, bluetooth, wifi, Fn-keys, etc. With the nvidia proprietary drivers from SBOpkgs video works great.

About a year ago I started getting the Predator buzz https://www.youtube.com/watch?v=gPR0MZOFk1o&t=33s (different model, same buzz). From my research, it appears to have something to do with not having drivers in linux that can drive the fans properly causing the system to run a little hot. At 39 degrees c there is no buzzing. Around 40 degrees c it starts to buzz. The system overall does not appear to be overheating as the highest I have noted is around 45-46 degrees c. I have tried sensor-detect and a myriad of other efforts that I googled to include nbfc. None seem to work. The system operates great except for the buzzing. In Windows 10, the fans run well enough to keep the system below the threshold and it only buzzes when I put stress on the system. I can hear the fans spinning up and slowing down. Research has discovered that it has something to do with how the Acer proprietary Windows software PredatorSense accesses the bios.

After that long explanation, I have two questions:

1.) Is there anyone running -current on a Predator or other Acer system that can verify if fan control improves under the 5 series kernel? I did note that acer-wmi gets split into two separate drivers but have not dug into the details enough to see if it starts to resolve the fan issue.

2.) Is there software similar to loadlin that can boot the linux kernel after Windows 10 boots? I do remember in the olden days when we could load, for example, sound drivers in Windows that could set something in the bios then boot into Linux with loadlin so the system would be able to use the sound card (I don't know if I explained that accurately, but the point is boot windows, load some driver, loadlin into linux, sound worked).

Thoughts are that maybe I could affect whatever software change would need to take place by booting into windows, then boot the Linux kernel.

Thank you in advance for any assistance. If there are any details that I can provide to help explain my quandary, please let me know.
 
Old 06-30-2020, 02:00 PM   #2
business_kid
LQ Guru
 
Registered: Jan 2006
Location: Ireland
Distribution: Slackware & Android
Posts: 11,569

Rep: Reputation: 1338Reputation: 1338Reputation: 1338Reputation: 1338Reputation: 1338Reputation: 1338Reputation: 1338Reputation: 1338Reputation: 1338Reputation: 1338
I haven't heard of a hack like you suggest (Boot windows, loadlin to linux) in 15+ years, if ever.

Temperatures under 70C are ok. Temperatures under 50C are fine - relax. Fan control is usually about the DSDT in the BIOS, and whatever controls the temperature. The DSDT has thresholds. Under 40, the fans stay off; Over 70, the fan is on hard (not that it makes much difference. I've seen 86 with a 'critical' on 90.

It seems like everyone has written some half-assed window manager and many have grown into useful alternatives, having their own power manager. These can chip in too. Acpi is a scripter's field day linking acpi events to actions (=scripts). You can get very convoluted and fussy if you want to. Knock yourself out.
 
Old 06-30-2020, 04:48 PM   #3
Gerswing
LQ Newbie
 
Registered: Jun 2020
Distribution: Slackware
Posts: 4

Original Poster
Rep: Reputation: Disabled
Less about heat than the buzz

Quote:
Originally Posted by business_kid View Post
I haven't heard of a hack like you suggest (Boot windows, loadlin to linux) in 15+ years, if ever.

Temperatures under 70C are ok. Temperatures under 50C are fine - relax. Fan control is usually about the DSDT in the BIOS, and whatever controls the temperature. The DSDT has thresholds. Under 40, the fans stay off; Over 70, the fan is on hard (not that it makes much difference. I've seen 86 with a 'critical' on 90.

It seems like everyone has written some half-assed window manager and many have grown into useful alternatives, having their own power manager. These can chip in too. Acpi is a scripter's field day linking acpi events to actions (=scripts). You can get very convoluted and fussy if you want to. Knock yourself out.
business_kid, Thank you for your reply. Truth is, it is less about the heat than the buzz. It is a design flaw in the Acer Predator. If the laptop was still under warranty I could send it in for repair and it would be quiet for about another year, after not having the laptop for about two months. But all comments I have seen say the buzz returns. The buzz appears in Windows 10 as well, just much quieter and starting later. Sounds like a bad fan, but is actually coming from the speakers. One solution proposed on Youtube was to disable the speakers and just use headphone if sound is needed. I may have to go that route if I cannot come up with a more elegant solution. I put up with it for about a year. But it is just one of those annoyances that I am tinkering with now that I have the time due to coronavirus.
 
Old 07-01-2020, 04:37 AM   #4
business_kid
LQ Guru
 
Registered: Jan 2006
Location: Ireland
Distribution: Slackware & Android
Posts: 11,569

Rep: Reputation: 1338Reputation: 1338Reputation: 1338Reputation: 1338Reputation: 1338Reputation: 1338Reputation: 1338Reputation: 1338Reputation: 1338Reputation: 1338
Hmmm - that's different.

Variable speed fans are often pulsed at slow speed.That's +5V/0V at an audible rate or a harmonic of it. You only need a few mV of that radiating to the sound card to cause a nasty buzz. Consider the leads from the fan as the 'transmitter' and your sound card/sound chip as the receiver. A small capacitor soldered between leads (e.g. at the plug on the motherboard) might help. Also routing of the fan leads; it might be possible to turn the fan 90 or even 180 to get the leads away from the sound chip. also try gluing or taping them to the m/b. The worst way to have them is a long length broadcasting at a long length of input track.Shielding is another option, but I wouldn't try it because it would only end in tears if the shield touched anything.
 
Old 07-05-2020, 12:56 AM   #5
Gerswing
LQ Newbie
 
Registered: Jun 2020
Distribution: Slackware
Posts: 4

Original Poster
Rep: Reputation: Disabled
@business_kid, I had been reading up on your proposal and considering it. However, when I run Windows 10, where I don't get the same buzz (at least not as much). However, found a new twist. Reviewing the drivers in Windows I noted:

Intel 100 series/C230 series Chipset Family Thermal Subsystem

In Slackware:

bash-4.3# lspci |grep Thermal
00:14.2 Signal processing controller: Intel Corporation Sunrise Point-H Thermal subsystem (rev 31)

Is the kernel potentially identifying the incorrect PCI chipset? If so, how can I force it to identify the appropriate one?

Searching the correct chipset in this forum has yielded results where others have had the correct chipset found with lspci. But it was included in their output for a different problem. Not the thermal subsystem. Any advice or assistance is appreciated.

Last edited by Gerswing; 07-05-2020 at 02:41 AM.
 
Old 07-05-2020, 12:37 PM   #6
business_kid
LQ Guru
 
Registered: Jan 2006
Location: Ireland
Distribution: Slackware & Android
Posts: 11,569

Rep: Reputation: 1338Reputation: 1338Reputation: 1338Reputation: 1338Reputation: 1338Reputation: 1338Reputation: 1338Reputation: 1338Reputation: 1338Reputation: 1338
IMHO, we're getting distracted. Buzz on Audio --> Thermal drivers for chipsets?

Lspci is simply being more precise, whereas windows mentions the family.

Last edited by business_kid; 07-05-2020 at 12:39 PM.
 
  


Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off



Similar Threads
Thread Thread Starter Forum Replies Last Post
LXer: Computer virus hits US Predator and Reaper drone fleet LXer Syndicated Linux News 0 10-08-2011 02:00 AM
LXer: 'Predator' Microsoft applies to give itself cancer LXer Syndicated Linux News 0 07-27-2007 04:31 AM
Mad Dog Predator 5.1 + linux? tj53 Linux - Hardware 3 07-14-2005 01:44 PM
joystick USB PREDATOR TH 400 calibrate sidlo Linux - Hardware 0 12-25-2004 11:50 AM
NVIDIA Predator MX440 8X AGP - Linux shutdown during install Kdiver58 Linux - Hardware 1 05-30-2003 12:40 AM

LinuxQuestions.org > Forums > Linux Forums > Linux - Distributions > Slackware

All times are GMT -5. The time now is 03:16 AM.

Main Menu
Advertisement
My LQ
Write for LQ
LinuxQuestions.org is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
Syndicate
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration