kernel-packages team mailing list archive

[David Henningsson <1260225@xxxxxxxxxxxxxxxxxx>]

While enabling these machines, we found we would sometimes lose an
interrupt if we change hardware volume during playback, and that
disabling msi fixed this issue. (Losing the interrupt caused underruns
and crackling audio, as the one second timeout is usually bigger than
the period size.)

The machines were all machines from HP, running AMD Hudson controller,
and Realtek ALC282 codec.

Cc: stable@xxxxxxxxxxxxxxx
BugLink: https://bugs.launchpad.net/bugs/1260225
Signed-off-by: David Henningsson <david.henningsson@xxxxxxxxxxxxx>
---
 sound/pci/hda/hda_intel.c |    4 ++++
 1 file changed, 4 insertions(+)

diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c
index af86c71..440c355 100644
--- a/sound/pci/hda/hda_intel.c
+++ b/sound/pci/hda/hda_intel.c
@@ -3446,6 +3446,10 @@ static void check_probe_mask(struct azx *chip, int dev)
  * white/black-list for enable_msi
  */
 static struct snd_pci_quirk msi_black_list[] = {
+	SND_PCI_QUIRK(0x103c, 0x2191, "HP", 0), /* AMD Hudson */
+	SND_PCI_QUIRK(0x103c, 0x2192, "HP", 0), /* AMD Hudson */
+	SND_PCI_QUIRK(0x103c, 0x21f7, "HP", 0), /* AMD Hudson */
+	SND_PCI_QUIRK(0x103c, 0x21fa, "HP", 0), /* AMD Hudson */
 	SND_PCI_QUIRK(0x1043, 0x81f2, "ASUS", 0), /* Athlon64 X2 + nvidia */
 	SND_PCI_QUIRK(0x1043, 0x81f6, "ASUS", 0), /* nvidia */
 	SND_PCI_QUIRK(0x1043, 0x822d, "ASUS", 0), /* Athlon64 X2 + nvidia MCP55 */
-- 
1.7.9.5


** Tags added: blocks-hwcert-enablement

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1260225

Title:
  Crackling audio on HP / AMD Hudson machines when changing volume
  during playback

Status in HWE Next Project:
  New
Status in “linux” package in Ubuntu:
  In Progress

Bug description:
  We discovered that for these machines we would sometimes lose an
  interrupt if we changed volume during playback and that enable_msi=0
  would fix this issue.

  This bug is for tracking purposes, please do not triage.

To manage notifications about this bug go to:
https://bugs.launchpad.net/hwe-next/+bug/1260225/+subscriptions