Bugzilla – Bug 114683
master volume control has no influence on sound volume
Last modified: 2005-09-01 13:16:56 UTC
# hwinfo --sound 20: PCI 1f.5: 0401 Multimedia audio controller [Created at pci.277] UDI: /org/freedesktop/Hal/devices/pci_8086_24c5 Unique ID: W60f.s8AbWHc27Y9 SysFS ID: /devices/pci0000:00/0000:00:1f.5 SysFS BusID: 0000:00:1f.5 Hardware Class: sound Model: "IBM NetVista A30p" Vendor: pci 0x8086 "Intel Corporation" Device: pci 0x24c5 "82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) AC'97 Audio Controller" SubVendor: pci 0x1014 "IBM" SubDevice: pci 0x0267 "NetVista A30p" Revision: 0x01 Driver: "Intel ICH" I/O Ports: 0x1c00-0x1cff (rw) I/O Ports: 0x18c0-0x18ff (rw) Memory Range: 0xc0080c00-0xc0080dff (rw,non-prefetchable) Memory Range: 0xc0080800-0xc00808ff (rw,non-prefetchable) IRQ: 201 (9865 events) Module Alias: "pci:v00008086d000024C5sv00001014sd00000267bc04sc01i00" Driver Info #0: Driver Status: snd_intel8x0 is active Driver Activation Cmd: "modprobe snd_intel8x0" Driver Info #1: Driver Status: i810_audio is not active Driver Activation Cmd: "modprobe i810_audio" Config Status: cfg=yes, avail=yes, need=no, active=unknown Only the PCM control changes sound volume, the master volume control does nothing.
Attach /proc/asound/card0/codec97#0/* files. First thing to try is to adjust "Headphone" instead of "Master". If this changes the volume, try to add ac97_quirk=hp_only module option to snd-intel8x0.
Created attachment 48450 [details] /proc/asound/card0/codec97#0/ac97#0-0
Created attachment 48451 [details] /proc/asound/card0/codec97#0/ac97#0-0+regs
Yes, "Headphones" was the inofficial master control. After adding the suggested module option everything works now as expected. :-)
Thanks for confirmation. I'll add the entry for this device to the whitelist in the driver.
The patch was committed to kernel CVS.