Talk:Problem with high pitch noises - Revision history

Thhart: /* Discussion of "Limit ACPI CPU power states" */

2010-06-14T08:55:26Z

‎Discussion of "Limit ACPI CPU power states"

Zachinger: /* Discussion of "Limit ACPI CPU power states" */

2010-05-29T15:11:56Z

‎Discussion of "Limit ACPI CPU power states"

Sanmai: /* ASLA Vs. noise on X200s */ new section

2010-05-11T11:47:49Z

‎ASLA Vs. noise on X200s: new section

Ivoks at 20:37, 28 June 2009

2009-06-28T20:37:29Z

Mkay: Bluetooth causing noise?

2008-10-19T07:55:09Z

Bluetooth causing noise?

KotCzarny: /* Noise from BACKLIGHT */

2007-11-15T07:20:13Z

‎Noise from BACKLIGHT

KotCzarny: /* Noise from LCD */

2007-11-15T07:06:46Z

‎Noise from LCD

KotCzarny: New section: Noise from LCD

2007-11-15T06:58:48Z

New section: Noise from LCD

Synablade at 11:26, 18 October 2007

2007-10-18T11:26:24Z

Piccobello: /* Discussion of "Limit ACPI CPU power states" */

2006-11-25T09:53:16Z

‎Discussion of "Limit ACPI CPU power states"

← Older revision		Revision as of 08:55, 14 June 2010
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	* Zachinger: Some info on my experiences with my new T410s: Shows two types of noise. A weak high pitch noise that seemed to be related to usb/bluetooth. Switching bluetooth and WLAN of reduces it a bit further. But most annoyingly is a buzzing noise caused by the C-states when on AC. Switching off CPU powersavings in the BIOS or setting max_cstate=1 at boot time works both but costs almost 1 hour in battery. But I can greatly reduce that sound by using the 65W AC adapter from my old X60s instead of the 90W!		* Zachinger: Some info on my experiences with my new T410s: Shows two types of noise. A weak high pitch noise that seemed to be related to usb/bluetooth. Switching bluetooth and WLAN of reduces it a bit further. But most annoyingly is a buzzing noise caused by the C-states when on AC. Switching off CPU powersavings in the BIOS or setting max_cstate=1 at boot time works both but costs almost 1 hour in battery. But I can greatly reduce that sound by using the 65W AC adapter from my old X60s instead of the 90W!
		+
		+	* Thomas Hartwig: My noise with a T61p is related to the power supply. I have the sound if I use a standard 90 W from Lenovo Revision 1, I have no sound if I use either: 60 W supply from Lenovo, 90 W supply from Firstcom. If the sound is there (original power supply) it changes according to screen brightness, however it is always there. I have read a german forum statement that states other supply units from Lenovo with different revisions are not resulting in the sound. [[User:Thhart\|Thhart]]

	== Harddisk related noise ==		== Harddisk related noise ==

← Older revision		Revision as of 15:11, 29 May 2010
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	* [[User:Piccobello\|Piccobello]]: on an {{X31}}, I noticed a very weak sound that seems to be turned on whenever I switch to the '''performance''' governor, and is only turned off if I switch to '''powersave''', regardless of wether the battery is used.		* [[User:Piccobello\|Piccobello]]: on an {{X31}}, I noticed a very weak sound that seems to be turned on whenever I switch to the '''performance''' governor, and is only turned off if I switch to '''powersave''', regardless of wether the battery is used.
		+
		+	* Zachinger: Some info on my experiences with my new T410s: Shows two types of noise. A weak high pitch noise that seemed to be related to usb/bluetooth. Switching bluetooth and WLAN of reduces it a bit further. But most annoyingly is a buzzing noise caused by the C-states when on AC. Switching off CPU powersavings in the BIOS or setting max_cstate=1 at boot time works both but costs almost 1 hour in battery. But I can greatly reduce that sound by using the 65W AC adapter from my old X60s instead of the 90W!

	== Harddisk related noise ==		== Harddisk related noise ==

← Older revision		Revision as of 11:47, 11 May 2010
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	I([[User:mkay\|mkay]]) have just realised that all my high pitched noises, when my {{T60}} is on battery, disappear if I turn of bluetooth with the key combination FN+F5 on my {{T60}}.		I([[User:mkay\|mkay]]) have just realised that all my high pitched noises, when my {{T60}} is on battery, disappear if I turn of bluetooth with the key combination FN+F5 on my {{T60}}.
	I can confirm that disabling bluetooth removes most of the noise. However, there is one more thing - USB suspend. I noticed that when running powertop (http://www.lesswatts.org/projects/powertop/) and following suggestions, one suggestion (enabling USB suspend) removes rest of the noise.		I can confirm that disabling bluetooth removes most of the noise. However, there is one more thing - USB suspend. I noticed that when running powertop (http://www.lesswatts.org/projects/powertop/) and following suggestions, one suggestion (enabling USB suspend) removes rest of the noise.
		+
		+	== ASLA Vs. noise on X200s ==
		+
		+	Noise on '''X200s''' virtually disappeared after I configured ALSA. [[User:Sanmai\|Sanmai]] 11:47, 11 May 2010 (UTC)

← Older revision		Revision as of 20:37, 28 June 2009
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	== Noise from BLUETOOTH ==		== Noise from BLUETOOTH ==
	I([[User:mkay\|mkay]]) have just realised that all my high pitched noises, when my {{T60}} is on battery, disappear if I turn of bluetooth with the key combination FN+F5 on my {{T60}}.		I([[User:mkay\|mkay]]) have just realised that all my high pitched noises, when my {{T60}} is on battery, disappear if I turn of bluetooth with the key combination FN+F5 on my {{T60}}.
		+	I can confirm that disabling bluetooth removes most of the noise. However, there is one more thing - USB suspend. I noticed that when running powertop (http://www.lesswatts.org/projects/powertop/) and following suggestions, one suggestion (enabling USB suspend) removes rest of the noise.

← Older revision		Revision as of 07:55, 19 October 2008
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	I ([[User:KotCzarny\|KotCzarny]]) have noticed this problem in: {{X30}}, {{X31}}, {{X32}}, {{X41_Tablet}}.		I ([[User:KotCzarny\|KotCzarny]]) have noticed this problem in: {{X30}}, {{X31}}, {{X32}}, {{X41_Tablet}}.
		+
		+	== Noise from BLUETOOTH ==
		+	I([[User:mkay\|mkay]]) have just realised that all my high pitched noises, when my {{T60}} is on battery, disappear if I turn of bluetooth with the key combination FN+F5 on my {{T60}}.

← Older revision		Revision as of 07:20, 15 November 2007
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	[http://en.wikipedia.org/wiki/Burst_dimming More info about dimming used in laptops]		[http://en.wikipedia.org/wiki/Burst_dimming More info about dimming used in laptops]

−	I ([[User:KotCzarny]]) have this problem in: [[X30]], [[X31]], [[X32]], [[X41_Tablet]] .	+	I ([[User:KotCzarny\|KotCzarny]]) have noticed this problem in: {{X30}}, {{X31}}, {{X32}}, {{X41_Tablet}}.

@@ Line 72: / Line 72: @@
 Reload your alsa config and enjoy the silence!!!
-== Noise from LCD ==
+== Noise from BACKLIGHT ==
-Dimming lcd (via fn-home/end or acpi) results in a noise.
+Dimming display (via fn-home/end or acpi) results in a high pitched noise.
-Only resolution is to keep lcd at full brightness or turned off.
+Only solution is to keep lcd at full brightness or turned off.
 [http://en.wikipedia.org/wiki/Burst_dimming More info about dimming used in laptops]

← Older revision		Revision as of 06:58, 15 November 2007
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	Reload your alsa config and enjoy the silence!!!		Reload your alsa config and enjoy the silence!!!
		+
		+	== Noise from LCD ==
		+
		+	Dimming lcd (via fn-home/end or acpi) results in a noise.
		+	Only resolution is to keep lcd at full brightness or turned off.
		+	[http://en.wikipedia.org/wiki/Burst_dimming More info about dimming used in laptops]

← Older revision		Revision as of 11:26, 18 October 2007
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	== Noise from Fan ==		== Noise from Fan ==
	http://forum.thinkpads.com/viewtopic.php?p=171683		http://forum.thinkpads.com/viewtopic.php?p=171683
		+
		+	== Noise from Microphone on the T60 ==
		+	I found out that the "pitching" noise while workin on battery could be solved else as setting "cstate" to "2" and loosing battery time.
		+
		+	The real problem about the pitching noise on my T60 is the misplacement of the microphone, which seems to be vulnerable to the frequencies the processor is generating on cstates above "2"!
		+
		+	Now the fix which has worked for me is:
		+
		+	Setting the module option "position_fix=2"!
		+
		+	Thanks to the existing Thinkwiki article about the soundcard:
		+	http://www.thinkwiki.org/wiki/AD1981HD
		+
		+	Debian:
		+	open up the /etc/modprobe.d/alsa-base file and go to the line where "snd-hda-intel" is loaded.
		+	After this line insert "options snd-hda-intel position_fix=2".
		+
		+	Reload your alsa config and enjoy the silence!!!

← Older revision		Revision as of 09:53, 25 November 2006
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	* Martin Aumueller: Upgrading the BIOS on my X60s from 1.04 to 1.06 solved the noise problem for me, however it seems to draw about 500 mW more power with the newer BIOS.		* Martin Aumueller: Upgrading the BIOS on my X60s from 1.04 to 1.06 solved the noise problem for me, however it seems to draw about 500 mW more power with the newer BIOS.
		+
		+	* [[User:Piccobello\|Piccobello]]: on an {{X31}}, I noticed a very weak sound that seems to be turned on whenever I switch to the '''performance''' governor, and is only turned off if I switch to '''powersave''', regardless of wether the battery is used.

	== Harddisk related noise ==		== Harddisk related noise ==