diff options
| author | Markus Lindner <lindner.markus@outlook.at> | 2026-07-22 03:09:18 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2026-07-24 13:31:52 +0200 |
| commit | acd8aa3c4b91a38c8521000790890bc9d1083f1d (patch) | |
| tree | 58cb68ca5393cdfdb4e6ff4edc00074922651f30 /tools/perf/scripts/python/stackcollapse.py | |
| parent | 704de5697008ea5caa04bb6a7266624699801ddc (diff) | |
ALSA: usb-audio: Add dB map quirk for Razer Barracuda X 2.4
The Razer Barracuda X 2.4 GHz USB headset dongle (0x1532:0x0552)
reports a minimum volume register value of cval->min = -16800.
In UAC 1/256 dB units, -16800 corresponds to -65.625 dB. However,
stock ALSA misinterprets this raw integer as 1/100 dB units
(-168.00 dB), causing user-space audio servers (PipeWire /
PulseAudio) to map their volume curves against an incorrectly wide
range.
Add an explicit usbmix_dB_map entry overriding Unit 2 to -6562
(-65.62 dB) to accurately report the physical hardware
attenuation bounds.
Signed-off-by: Markus Lindner <lindner.markus@outlook.at>
Link: https://patch.msgid.link/AS8P195MB2142F4EFF83980BD02BA6566E1C12@AS8P195MB2142.EURP195.PROD.OUTLOOK.COM
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'tools/perf/scripts/python/stackcollapse.py')
0 files changed, 0 insertions, 0 deletions