Bug 199815 - Static/"Thunk" Audio on Dell E7450
Summary: Static/"Thunk" Audio on Dell E7450
Status: NEW
Alias: None
Product: Drivers
Classification: Unclassified
Component: Sound(ALSA) (show other bugs)
Hardware: Intel Linux
: P1 normal
Assignee: Jaroslav Kysela
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2018-05-23 18:28 UTC by Jason Scalia
Modified: 2018-05-30 20:53 UTC (History)
2 users (show)

See Also:
Kernel Version: 4.16.9-300.fc28.x86_64
Subsystem:
Regression: No
Bisected commit-id:

Attachments
alsa-info from Dell E7450 (45.53 KB, text/plain)
2018-05-23 18:31 UTC, Jason Scalia 		Details
Dell 7450 lspci -v -n Output (8.50 KB, text/plain)
2018-05-23 18:31 UTC, Jason Scalia 		Details
Alsa info from another e7470 (53.41 KB, text/plain)
2018-05-30 20:52 UTC, Kayne Krusr 		Details
lspci output e7470 (4.31 KB, text/plain)
2018-05-30 20:53 UTC, Kayne Krusr 		Details
Add an attachment (proposed patch, testcase, etc.)

Description Jason Scalia 2018-05-23 18:28:34 UTC 
Hello,

I am currently experiencing lot's of static and "thunks" on and off regarding audio on my Dell E7450 Laptop's line out. I've tried different speakers and headsets, with the same issue. If I mute the audio, the hissing and intermittent "Thunk" also stop.

I've tried disabling power management, with no luck:

# cat /sys/module/snd_hda_intel/parameters/power_save
0

I'll attach the output of alsa_info and lspci.

Thanks!
Comment 1 Jason Scalia 2018-05-23 18:31:23 UTC 
Created attachment 276151 [details]
alsa-info from Dell E7450
Comment 2 Jason Scalia 2018-05-23 18:31:40 UTC 
Created attachment 276153 [details]
Dell 7450 lspci -v -n Output
Comment 3 Kayne Krusr 2018-05-30 20:52:03 UTC 
Created attachment 276277 [details]
Alsa info from another e7470

I have similar issue to Jason here.   Similar product line hw here Lattitude E7470.

cat /sys/module/snd_hda_intel/parameters/power_save  reports 0 by default on my fedora 27 system.

I will update with another lspci report.
Comment 4 Kayne Krusr 2018-05-30 20:53:30 UTC 
Created attachment 276279 [details]
lspci output e7470
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