2008/10/1, Mariusz Kozlowski <m.kozlowski@xxxxxxxxxx>: > Hello, > > I found that on my old iMac G3 aumix behaves weird on newer (up to > 2.6.27-rc8) kernels. The sound is only present _when_ muted and is quiet > I'd say 10% of 'normal' max level. If you turn the volume up - the box is > silent. > If you unmute - the box is silent. 100% reproducible. > > Bisection result is a bit surprising as it seems it was introduced some time > ago, > in 2.6.25 ~ 2.6.26-rc1 window: > > commit a8c2a6bf464d983c642c8b8b001a57aabbf76673 > Author: Risto Suominen <Risto.Suominen@xxxxxxxxx> > Date: Thu Apr 17 17:55:30 2008 +0200 > > [ALSA] snd-powermac: AWACS and Screamer mixers for PM7500, Beige, and > iMac SL > > Add mixer controls and correct headphone detection bits for PowerMacs > 7300/7500 (AWACS) and G3 Beige (Screamer), and iMac G3 Slot-loading > (Screamer). > > > Mariusz > > > > processor : 0 > cpu : 740/750 > temperature : 52 C (uncalibrated) > clock : 400.000000MHz > revision : 2.2 (pvr 0008 0202) > bogomips : 49.79 > timebase : 24967326 > platform : PowerMac > model : PowerMac2,1 > machine : PowerMac2,1 > motherboard : PowerMac2,1 MacRISC2 MacRISC Power Macintosh > detected as : 66 (iMac FireWire) > pmac flags : 00000014 > L2 cache : 512K unified > pmac-generation : NewWorld > > 0000:00:0b.0 Host bridge: Apple Computer Inc. UniNorth AGP > 0000:00:10.0 Display controller: ATI Technologies Inc Rage 128 RL/VR AGP > 0001:10:0b.0 Host bridge: Apple Computer Inc. UniNorth PCI > 0001:10:12.0 FireWire (IEEE 1394): Texas Instruments TSB12LV23 IEEE-1394 > Controller > 0001:10:13.0 Ethernet controller: Digital Equipment Corporation DECchip > 21142/43 (rev 41) > 0001:10:17.0 Class ff00: Apple Computer Inc. KeyLargo Mac I/O (rev 02) > 0001:10:18.0 USB Controller: Apple Computer Inc. KeyLargo USB > 0001:10:19.0 USB Controller: Apple Computer Inc. KeyLargo USB > 0002:20:0b.0 Host bridge: Apple Computer Inc. UniNorth Internal PCI > > Mariusz, thank you for the report. This is my fault. Sorry. PowerMac2,1 seems to have the mute bit reversed compared to later models, PowerMac2,2 and PowerMac4,1, which I was using for testing my changes. This has been fixed in a later patch that should be included in kernel 2.6.27, I believe. Takashi, when was this (or will be) included? I sent two patches on 2008-08-25. Risto -- To unsubscribe from this list: send the line "unsubscribe kernel-testers" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
