Running Slacware 11.0 kernel 2.4.33.3 and laptop "HP Compaq nx6325"

I will start with the output of "lspci"

root@slack:~# lspci
00:00.0 Host bridge: ATI Technologies Inc RS480 Host Bridge (rev 10)
00:01.0 PCI bridge: ATI Technologies Inc RS480 PCI Bridge
00:04.0 PCI bridge: ATI Technologies Inc RS480 PCI Bridge
00:05.0 PCI bridge: ATI Technologies Inc Unknown device 5a37
00:06.0 PCI bridge: ATI Technologies Inc RS480 PCI Bridge
00:12.0 IDE interface: ATI Technologies Inc ATI 4379 Serial ATA Controller (rev 80)
00:13.0 USB Controller: ATI Technologies Inc IXP SB400 USB Host Controller (rev 80)
00:13.1 USB Controller: ATI Technologies Inc IXP SB400 USB Host Controller (rev 80)
00:13.2 USB Controller: ATI Technologies Inc IXP SB400 USB2 Host Controller (rev 80)
00:14.0 SMBus: ATI Technologies Inc IXP SB400 SMBus Controller (rev 81)
00:14.1 IDE interface: ATI Technologies Inc Standard Dual Channel PCI IDE Controller ATI (rev 80)
00:14.2 Audio device: ATI Technologies Inc SB450 HDA Audio (rev 01)
00:14.3 ISA bridge: ATI Technologies Inc IXP SB400 PCI-ISA Bridge (rev 80)
00:14.4 PCI bridge: ATI Technologies Inc IXP SB400 PCI-PCI Bridge (rev 80)
00:18.0 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] HyperTransport Technology Configuration
00:18.1 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Address Map
00:18.2 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] DRAM Controller
00:18.3 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Miscellaneous Control
01:05.0 VGA compatible controller: ATI Technologies Inc RS482 [Radeon Xpress 200M]
02:01.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5788 Gigabit Ethernet (rev 03)
02:04.0 CardBus bridge: Texas Instruments PCIxx12 Cardbus Controller
02:04.1 FireWire (IEEE 1394): Texas Instruments PCIxx12 OHCI Compliant IEEE 1394 Host Controller
02:04.2 Mass storage controller: Texas Instruments 5-in-1 Multimedia Card Reader (SD/MMC/MS/MS PRO/xD)
02:04.3 Class 0805: Texas Instruments PCIxx12 SDA Standard Compliant SD Host Controller
30:00.0 Network controller: Broadcom Corporation BCM4310 UART (rev 01)

It seems that my soundcard is recognized and drivers for it are loaded by /etc/rc.d/rc.hotplug, here is the output of "lsmod"

root@slack:~# lsmod
Module Size Used by Not tainted
radeon 101856 0
snd-seq-oss 23104 0 (unused)
snd-seq-midi-event 3208 0 [snd-seq-oss]
snd-seq 33552 2 [snd-seq-oss snd-seq-midi-event]
snd-seq-device 3716 0 [snd-seq-oss snd-seq]
snd-pcm-oss 28928 0 (unused)
snd-mixer-oss 11928 0 [snd-pcm-oss]
keybdev 1828 0 (unused)
mousedev 4244 1
hid 21380 0 (unused)
usbmouse 1912 0 (unused)
input 3104 0 [keybdev mousedev hid usbmouse]
usb-ohci 18856 0 (unused)
ehci-hcd 17644 0 (unused)
usbcore 56812 1 [hid usbmouse usb-ohci ehci-hcd]
snd-hda-intel 7964 2
snd-hda-codec 108752 0 [snd-hda-intel]
snd-pcm 52804 1 [snd-pcm-oss snd-hda-intel snd-hda-codec]
snd-timer 13168 1 [snd-seq snd-pcm]
snd 34304 0 [snd-seq-oss snd-seq-midi-event snd-seq snd-seq-device snd-pcm-oss snd-mixer-oss snd-hda-intel snd-hda-codec snd-pcm snd-timer]
soundcore 3300 6 [snd]
snd-page-alloc 4980 0 [snd-seq-oss snd-seq snd-seq-device snd-mixer-oss snd-hda-intel snd-pcm snd-timer snd]
tg3 58348 1
ohci1394 23568 0 (unused)
ieee1394 41156 0 [ohci1394]
ds 6612 0 (unused)
yenta_socket 10532 1
pcmcia_core 39492 0 [ds yenta_socket]
ntfs 50848 1 (autoclean)
ide-scsi 9392 0

Seems everything is alright but the "mute" button of my laptop "HP Compaq nx6325" is on, so i unmuted it with "alsamixer" and saved averything with alsactl to /etc/asound.stat config while, "alsactl" gave me no error, and here is the output of "aplay -l" if it helps:

root@slack:~# aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: SB [HDA ATI SB], device 0: AD198x Analog [AD198x Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 0: SB [HDA ATI SB], device 1: AD198x Digital [AD198x Digital]
Subdevices: 1/1
Subdevice #0: subdevice #0

I have no idea how to unmute it, some help would be apreciated, and the most interesting is that when my slackware 11.0 2.4.33.3 boots up and runs /etc/rc.d/rc.hotplug - in this moment the button of mute/unmute on the laptop turns on, maybe it is something wrong with this rc.hotplug?