Public bug reported: Ubuntu version: 11.10 x64 desktop edition Package: uncertain but probably related to alsa.
The mute LED flashes red when sound isn't muted and turns off when sound is muted (exactly the opposite of what it is supposed to do). This is caused by BIOS not telling the driver the correct way to light the LED. On some models this can be fixed by simply updating BIOS to a newer version. However it doesn't seem to work for all models. I can confirm that it doesn't work on HP envy 14-2014eo (BIOS version F.09). There is a workaround located at: http://git.kernel.org/?p=linux/kernel/git/tiwai/sound.git;a=commitdiff;h=e2ef36c688d5844a986424c3194bd33212c968ce#patch1 Thanks to Gustavo Maciel Dias Vieira<gust...@sagui.org> for discovering the origin as well as providing a workaround for the bug. Output of alsa-info on HP envy 14-2014eo http://www.alsa-project.org/db/?f=6b79f37da00701d92523292058d3f4ec1fb2f4dc Outout of dmidecodeon HP envy 14-2014eo: # dmidecode 2.9 SMBIOS 2.7 present. 41 structures occupying 1972 bytes. Table at 0x000E67D0. Handle 0x0000, DMI type 0, 24 bytes BIOS Information Vendor: Hewlett-Packard Version: F.09 Release Date: 11/14/2011 ROM Size: 2560 kB Characteristics: PCI is supported BIOS is upgradeable BIOS shadowing is allowed Boot from CD is supported Selectable boot is supported EDD is supported Japanese floppy for NEC 9800 1.2 MB is supported (int 13h) Japanese floppy for Toshiba 1.2 MB is supported (int 13h) 5.25"/360 KB floppy services are supported (int 13h) 5.25"/1.2 MB floppy services are supported (int 13h) 3.5"/720 KB floppy services are supported (int 13h) 3.5"/2.88 MB floppy services are supported (int 13h) 8042 keyboard services are supported (int 9h) CGA/mono video services are supported (int 10h) ACPI is supported USB legacy is supported BIOS boot specification is supported Targeted content distribution is supported BIOS Revision: 15.9 Firmware Revision: 147.18 Handle 0x0001, DMI type 1, 27 bytes System Information Manufacturer: Hewlett-Packard Product Name: HP ENVY 14 Notebook PC Version: 058E200000241910001620100 Serial Number: CNU1301KPW UUID: 4F55B00F-E40F-FBBF-E0C3-A1962ACEED46 Wake-up Type: Power Switch SKU Number: LS781EA#UUW Family: 103C_5335KV G=N L=CON B=HP S=PAV X=MIN Handle 0x0002, DMI type 2, 16 bytes Base Board Information Manufacturer: Hewlett-Packard Product Name: 3385 Version: KBC Version 93.12 Serial Number: PCFYR00QE1B0MC Asset Tag: Base Board Asset Tag Features: Board is a hosting board Board is replaceable Location In Chassis: Base Board Chassis Location Chassis Handle: 0x0003 Type: Motherboard Contained Object Handles: 0 Handle 0x0003, DMI type 3, 23 bytes Chassis Information Manufacturer: Hewlett-Packard Type: Notebook Lock: Not Present Version: Chassis Version Serial Number: Chassis Serial Number Asset Tag: CNU1301KPW Boot-up State: Safe Power Supply State: Safe Thermal State: Safe Security Status: None OEM Information: 0x00000119 Height: Unspecified Number Of Power Cords: 1 Contained Elements: 0 Handle 0x0004, DMI type 9, 17 bytes System Slot Information Designation: J5C1 Type: x16 <OUT OF SPEC> Current Usage: In Use Length: Long Characteristics: 3.3 V is provided Opening is shared PME signal is supported Hot-plug devices are supported Handle 0x0005, DMI type 9, 17 bytes System Slot Information Designation: J6C1 Type: x4 <OUT OF SPEC> Current Usage: In Use Length: Short Characteristics: 3.3 V is provided Opening is shared PME signal is supported Hot-plug devices are supported Handle 0x0006, DMI type 9, 17 bytes System Slot Information Designation: J6C2 Type: x1 <OUT OF SPEC> Current Usage: In Use Length: Short Characteristics: 3.3 V is provided Opening is shared PME signal is supported Hot-plug devices are supported Handle 0x0007, DMI type 9, 17 bytes System Slot Information Designation: J6D2 Type: x1 <OUT OF SPEC> Current Usage: In Use Length: Short Characteristics: 3.3 V is provided Opening is shared PME signal is supported Hot-plug devices are supported Handle 0x0008, DMI type 9, 17 bytes System Slot Information Designation: J7C1 Type: x1 <OUT OF SPEC> Current Usage: In Use Length: Short Characteristics: 3.3 V is provided Opening is shared PME signal is supported Hot-plug devices are supported Handle 0x0009, DMI type 9, 17 bytes System Slot Information Designation: J7D2 Type: x1 <OUT OF SPEC> Current Usage: In Use Length: Short Characteristics: 3.3 V is provided Opening is shared PME signal is supported Hot-plug devices are supported Handle 0x000A, DMI type 9, 17 bytes System Slot Information Designation: J8C2 Type: x16 <OUT OF SPEC> Current Usage: In Use Length: Long Characteristics: 3.3 V is provided Opening is shared PME signal is supported Hot-plug devices are supported Handle 0x000B, DMI type 11, 5 bytes OEM Strings String 1: $HP$ String 2: LOC#ABA String 3: ABS 70/71 78 79 7A 7B String 4: CNB1 058E200000241910001620100 String 5: HP_Mute_LED_P_G Handle 0x000C, DMI type 12, 5 bytes System Configuration Options Option 1: String1 for Type12 Equipment Manufacturer Handle 0x000D, DMI type 13, 22 bytes BIOS Language Information Installable Languages: 4 en|US|iso8859-1 fr|CA|iso8859-1 es|ES|iso8859-1 zh|TW|unicode Currently Installed Language: en|US|iso8859-1 Handle 0x000E, DMI type 21, 7 bytes Built-in Pointing Device Type: Touch Pad Interface: PS/2 Buttons: 4 Handle 0x000F, DMI type 22, 26 bytes Portable Battery Location: Primary Manufacturer: Samsung Name: RM08059 Chemistry: Lithium Ion Design Capacity: 59200 mWh Design Voltage: 14800 mV SBDS Version: Not Specified Maximum Error: 1% SBDS Serial Number: 0825 SBDS Manufacture Date: 2011-07-16 OEM-specific Information: 0x0000FFFF Handle 0x0010, DMI type 26, 22 bytes Voltage Probe Description: Voltage Probe Description. Location: Unknown Status: Unknown Maximum Value: Unknown Minimum Value: Unknown Resolution: Unknown Tolerance: Unknown Accuracy: Unknown OEM-specific Information: 0x00000000 Nominal Value: Unknown Handle 0x0011, DMI type 27, 15 bytes Cooling Device Type: Fan Status: OK OEM-specific Information: 0x00000000 Nominal Speed: 2000 rpm Handle 0x0012, DMI type 32, 20 bytes System Boot Information Status: No errors detected Handle 0x0013, DMI type 39, 22 bytes System Power Supply Location: OEM_Define0 Name: OEM_Define1 Manufacturer: OEM_Define2 Serial Number: OEM_Define3 Asset Tag: OEM_Define4 Model Part Number: OEM_Define5 Revision: OEM_Define6 Max Power Capacity: 0.075 W Status: Present, OK Type: Regulator Input Voltage Range Switching: Auto-switch Plugged: No Hot Replaceable: No Cooling Device Handle: 0x0011 Handle 0x0014, DMI type 40, 18 bytes Unknown Type Header and Data: 28 12 14 00 02 06 04 00 05 01 AA 07 00 00 05 02 DC 05 Strings: PCIExpressx16 Compiler Version: VC 9.0 Handle 0x0015, DMI type 41, 11 bytes Unknown Type Header and Data: 29 0B 15 00 01 83 01 00 00 01 00 Strings: ATI Whistler Handle 0x0016, DMI type 136, 6 bytes OEM-specific Type Header and Data: 88 06 16 00 FF FF Handle 0x0017, DMI type 129, 8 bytes OEM-specific Type Header and Data: 81 08 17 00 01 01 02 01 Strings: Intel_ASF Intel_ASF_001 Handle 0x0018, DMI type 130, 20 bytes OEM-specific Type Header and Data: 82 14 18 00 24 41 4D 54 01 01 01 01 01 A5 1F 02 00 00 00 00 Handle 0x0019, DMI type 131, 64 bytes OEM-specific Type Header and Data: 83 40 19 00 31 00 00 00 07 00 00 00 00 00 35 00 F8 00 49 1C FF FF FF FF 19 20 00 00 01 00 07 00 29 04 0A 00 80 00 C0 AC C8 00 FF FF 00 00 00 05 90 00 00 00 F6 00 00 00 76 50 72 6F 00 00 00 00 Handle 0x001A, DMI type 16, 23 bytes Physical Memory Array Location: System Board Or Motherboard Use: System Memory Error Correction Type: None Maximum Capacity: 16 GB Error Information Handle: No Error Number Of Devices: 2 Handle 0x001B, DMI type 17, 34 bytes Memory Device Array Handle: 0x001A Error Information Handle: Not Provided Total Width: Unknown Data Width: Unknown Size: No Module Installed Form Factor: DIMM Set: None Locator: Bottom-Slot 1 (Top) Bank Locator: BANK 0 Type: Unknown Type Detail: None Speed: Unknown Manufacturer: Not Specified Serial Number: Not Specified Asset Tag: 0123456789 Part Number: Not Specified Handle 0x001C, DMI type 17, 34 bytes Memory Device Array Handle: 0x001A Error Information Handle: 0x001D Total Width: 64 bits Data Width: 64 bits Size: 4096 MB Form Factor: SODIMM Set: None Locator: Bottom-Slot 2 (Under) Bank Locator: BANK 2 Type: <OUT OF SPEC> Type Detail: Synchronous Speed: 1333 MHz (0.8 ns) Manufacturer: ELPIDA Serial Number: 082F0EDE Asset Tag: 0123456789 Part Number: EBJ41UF8BCS0-DJ-F Handle 0x001D, DMI type 18, 23 bytes 32-bit Memory Error Information Type: OK Granularity: Unknown Operation: Unknown Vendor Syndrome: Unknown Memory Array Address: Unknown Device Address: Unknown Resolution: Unknown Handle 0x001E, DMI type 20, 35 bytes Memory Device Mapped Address Starting Address: 0x00000000000 Ending Address: 0x000FFFFFFFF Range Size: 4 GB Physical Device Handle: 0x001C Memory Array Mapped Address Handle: 0x0020 Partition Row Position: 1 Interleave Position: 1 Interleaved Data Depth: 1 Handle 0x001F, DMI type 18, 23 bytes 32-bit Memory Error Information Type: OK Granularity: Unknown Operation: Unknown Vendor Syndrome: Unknown Memory Array Address: Unknown Device Address: Unknown Resolution: Unknown Handle 0x0020, DMI type 19, 31 bytes Memory Array Mapped Address Starting Address: 0x00000000000 Ending Address: 0x000FFFFFFFF Range Size: 4 GB Physical Array Handle: 0x001A Partition Width: 0 Handle 0x0021, DMI type 41, 11 bytes Unknown Type Header and Data: 29 0B 21 00 01 81 01 00 00 09 00 Strings: Intel Wireless-N 1030+Bluetooth combo(BGN) Handle 0x0022, DMI type 41, 11 bytes Unknown Type Header and Data: 29 0B 22 00 01 85 01 00 00 0A 00 Strings: ATHEROS Gbe Lan Connection Handle 0x0023, DMI type 4, 42 bytes Processor Information Socket Designation: CPU1 Type: Central Processor Family: <OUT OF SPEC> Manufacturer: Intel(R) Corporation ID: A7 06 02 00 FF FB EB BF Version: Intel(R) Core(TM) i7-2630QM CPU @ 2.00GHz Voltage: 0.0 V External Clock: 1333 MHz Max Speed: 2000 MHz Current Speed: 2000 MHz Status: Populated, Enabled Upgrade: Other L1 Cache Handle: 0x0025 L2 Cache Handle: 0x0026 L3 Cache Handle: 0x0027 Serial Number: Not Specified Asset Tag: FFFF Part Number: Not Specified Core Count: 4 Core Enabled: 4 Thread Count: 8 Characteristics: 64-bit capable Handle 0x0024, DMI type 7, 19 bytes Cache Information Socket Designation: L1 Cache Configuration: Enabled, Not Socketed, Level 1 Operational Mode: Write Through Location: Internal Installed Size: 32 KB Maximum Size: 32 KB Supported SRAM Types: Synchronous Installed SRAM Type: Synchronous Speed: Unknown Error Correction Type: Single-bit ECC System Type: Data Associativity: 8-way Set-associative Handle 0x0025, DMI type 7, 19 bytes Cache Information Socket Designation: L1 Cache Configuration: Enabled, Not Socketed, Level 1 Operational Mode: Write Through Location: Internal Installed Size: 32 KB Maximum Size: 32 KB Supported SRAM Types: Synchronous Installed SRAM Type: Synchronous Speed: Unknown Error Correction Type: Single-bit ECC System Type: Instruction Associativity: 8-way Set-associative Handle 0x0026, DMI type 7, 19 bytes Cache Information Socket Designation: L2 Cache Configuration: Enabled, Not Socketed, Level 2 Operational Mode: Write Through Location: Internal Installed Size: 256 KB Maximum Size: 256 KB Supported SRAM Types: Synchronous Installed SRAM Type: Synchronous Speed: Unknown Error Correction Type: Single-bit ECC System Type: Unified Associativity: 8-way Set-associative Handle 0x0027, DMI type 7, 19 bytes Cache Information Socket Designation: L3 Cache Configuration: Enabled, Not Socketed, Level 3 Operational Mode: Write Through Location: Internal Installed Size: 6144 KB Maximum Size: 6144 KB Supported SRAM Types: Synchronous Installed SRAM Type: Synchronous Speed: Unknown Error Correction Type: Single-bit ECC System Type: Unified Associativity: <OUT OF SPEC> Handle 0x0028, DMI type 127, 4 bytes End Of Table Output of lspci -nn on HP envy 14-2014eo: 00:00.0 Host bridge [0600]: Intel Corporation 2nd Generation Core Processor Family DRAM Controller [8086:0104] (rev 09) 00:01.0 PCI bridge [0604]: Intel Corporation Xeon E3-1200/2nd Generation Core Processor Family PCI Express Root Port [8086:0101] (rev 09) 00:01.1 PCI bridge [0604]: Intel Corporation Xeon E3-1200/2nd Generation Core Processor Family PCI Express Root Port [8086:0105] (rev 09) 00:01.2 PCI bridge [0604]: Intel Corporation Xeon E3-1200/2nd Generation Core Processor Family PCI Express Root Port [8086:0109] (rev 09) 00:02.0 VGA compatible controller [0300]: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller [8086:0116] (rev 09) 00:16.0 Communication controller [0780]: Intel Corporation 6 Series/C200 Series Chipset Family MEI Controller #1 [8086:1c3a] (rev 04) 00:1a.0 USB Controller [0c03]: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #2 [8086:1c2d] (rev 05) 00:1b.0 Audio device [0403]: Intel Corporation 6 Series/C200 Series Chipset Family High Definition Audio Controller [8086:1c20] (rev 05) 00:1c.0 PCI bridge [0604]: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 1 [8086:1c10] (rev b5) 00:1c.4 PCI bridge [0604]: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 5 [8086:1c18] (rev b5) 00:1c.7 PCI bridge [0604]: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 8 [8086:1c1e] (rev b5) 00:1d.0 USB Controller [0c03]: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #1 [8086:1c26] (rev 05) 00:1f.0 ISA bridge [0601]: Intel Corporation HM65 Express Chipset Family LPC Controller [8086:1c49] (rev 05) 00:1f.2 SATA controller [0106]: Intel Corporation 6 Series/C200 Series Chipset Family 6 port SATA AHCI Controller [8086:1c03] (rev 05) 00:1f.3 SMBus [0c05]: Intel Corporation 6 Series/C200 Series Chipset Family SMBus Controller [8086:1c22] (rev 05) 01:00.0 VGA compatible controller [0300]: ATI Technologies Inc NI Whistler [AMD Radeon HD 6600M Series] [1002:6741] 09:00.0 Network controller [0280]: Intel Corporation Centrino Advanced-N 6230 [8086:0090] (rev 34) 0a:00.0 Ethernet controller [0200]: Atheros Communications AR8151 v2.0 Gigabit Ethernet [1969:1083] (rev c0) 0b:00.0 USB Controller [0c03]: NEC Corporation uPD720200 USB 3.0 Host Controller [1033:0194] (rev 04) ** Affects: ubuntu Importance: Undecided Status: New ** Tags: hp led mute -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/904784 Title: On some HP laptops mute LED doesn't work To manage notifications about this bug go to: 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