Crackling audio on HP / AMD Hudson machines when changing volume during playback
Bug #1260225 reported by
David Henningsson
This bug affects 1 person
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
HWE Next |
Fix Released
|
Undecided
|
Unassigned | ||
Trusty |
Fix Released
|
Undecided
|
Unassigned | ||
linux (Ubuntu) |
Fix Released
|
Undecided
|
David Henningsson |
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.
Changed in linux (Ubuntu): | |
status: | New → In Progress |
assignee: | nobody → David Henningsson (diwic) |
Changed in linux (Ubuntu): | |
status: | In Progress → Fix Committed |
tags: |
added: verification-done-saucy removed: verification-needed-saucy |
tags: |
added: verification-done-precise verification-done-quantal removed: verification-needed-precise verification-needed-quantal |
Changed in hwe-next: | |
status: | New → Fix Released |
To post a comment you must log in.
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: <email address hidden> /bugs.launchpad .net/bugs/ 1260225 pci/hda/ hda_intel. c | 4 ++++
BugLink: https:/
Signed-off-by: David Henningsson <email address hidden>
---
sound/
1 file changed, 4 insertions(+)
diff --git a/sound/ pci/hda/ hda_intel. c b/sound/ pci/hda/ hda_intel. c pci/hda/ hda_intel. c pci/hda/ hda_intel. c mask(struct azx *chip, int dev) QUIRK(0x103c, 0x2191, "HP", 0), /* AMD Hudson */ QUIRK(0x103c, 0x2192, "HP", 0), /* AMD Hudson */ QUIRK(0x103c, 0x21f7, "HP", 0), /* AMD Hudson */ QUIRK(0x103c, 0x21fa, "HP", 0), /* AMD Hudson */ QUIRK(0x1043, 0x81f2, "ASUS", 0), /* Athlon64 X2 + nvidia */ QUIRK(0x1043, 0x81f6, "ASUS", 0), /* nvidia */ QUIRK(0x1043, 0x822d, "ASUS", 0), /* Athlon64 X2 + nvidia MCP55 */
index af86c71..440c355 100644
--- a/sound/
+++ b/sound/
@@ -3446,6 +3446,10 @@ static void check_probe_
* white/black-list for enable_msi
*/
static struct snd_pci_quirk msi_black_list[] = {
+ SND_PCI_
+ SND_PCI_
+ SND_PCI_
+ SND_PCI_
SND_PCI_
SND_PCI_
SND_PCI_
--
1.7.9.5