LM 18.2 xfce -- Lenovo T520 -- no sound

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Stanley Krute
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Joined: Fri Jul 14, 2017 2:36 am

LM 18.2 xfce -- Lenovo T520 -- no sound

Post by Stanley Krute » Fri Jul 14, 2017 9:35 am

This is a fresh install. No sound. Here's some data on my system :

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System:    Host: stan-school-108-LM Kernel: 4.4.0-83-generic x86_64 (64 bit gcc: 5.4.0)
           Desktop: Xfce 4.12.3 (Gtk 2.24.28) Distro: Linux Mint 18.2 Sonya
Machine:   System: LENOVO (portable) product: 42424UU v: ThinkPad T520
           Mobo: LENOVO model: 42424UU
           Bios: LENOVO v: 8AET66WW (1.46 ) date: 09/20/2016
CPU:       Dual core Intel Core i7-2620M (-HT-MCP-) cache: 4096 KB
           flags: (lm nx sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx) bmips: 10764
           clock speeds: max: 3400 MHz 1: 1483 MHz 2: 1501 MHz 3: 1724 MHz
           4: 1407 MHz
Graphics:  Card: NVIDIA GF119M [Quadro NVS 4200M] bus-ID: 01:00.0
           Display Server: X.Org 1.18.4 drivers: nouveau (unloaded: fbdev,vesa)
           Resolution: 1600x900@59.99hz, 1600x900@60.00hz
           GLX Renderer: Gallium 0.4 on NVD9
           GLX Version: 3.0 Mesa 12.0.6 Direct Rendering: Yes
Audio:     Card-1 NVIDIA GF119 HDMI Audio Controller
           driver: snd_hda_intel bus-ID: 01:00.1
           Card-2 Intel 6 Series/C200 Series Family High Definition Audio Controller
           driver: snd_hda_intel bus-ID: 00:1b.0
           Sound: Advanced Linux Sound Architecture v: k4.4.0-83-generic
Network:   Card-1: Intel 82579LM Gigabit Network Connection
           driver: e1000e v: 3.2.6-k port: 6040 bus-ID: 00:19.0
           IF: enp0s25 state: down mac: <filter>
           Card-2: Intel Centrino Advanced-N 6205 [Taylor Peak]
           driver: iwlwifi bus-ID: 03:00.0
           IF: wlp3s0 state: up mac: <filter>
Drives:    HDD Total Size: 6375.3GB (2.3% used)
           ID-1: /dev/sda model: WDC_WDS250G1B0A size: 250.1GB
           ID-2: USB /dev/sdc model: My_Passport_259F size: 2000.4GB
           ID-3: USB /dev/sdg model: My_Passport_0820 size: 2000.4GB
           ID-4: USB /dev/sdh model: My_Passport_0827 size: 2000.4GB
           ID-5: USB /dev/sdi model: Cruzer size: 124.2GB
Partition: ID-1: / size: 19G used: 6.9G (40%) fs: ext4 dev: /dev/sda7
           ID-2: /boot size: 236M used: 168M (76%) fs: ext2 dev: /dev/sda6
           ID-3: /home size: 45G used: 365M (1%) fs: ext4 dev: /dev/sda9
           ID-4: swap-1 size: 4.75GB used: 0.00GB (0%) fs: swap dev: /dev/sda8
RAID:      No RAID devices: /proc/mdstat, md_mod kernel module present
Sensors:   System Temperatures: cpu: 55.0C mobo: N/A gpu: 55.0
           Fan Speeds (in rpm): cpu: 2673
Info:      Processes: 253 Uptime: 1 day Memory: 2882.7/7936.6MB
           Init: systemd runlevel: 5 Gcc sys: 5.4.0
           Client: Shell (bash 4.3.481) inxi: 2.2.35 
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Further data :

0- This machine also boots into Windows. The Windows Device Manager shows the sound chip as Conexant 20672 SmartAudio HD. Audio works just fine.

o- When AlsaMixer is run, it shows card as HDA Intel PCH, and chip as Conexant CX20590

o- When Pulse Audio Volume Control is run, on the Output Devices tab, the bar graph under Built-in Audio Analog Stereo shows sound data moving through the system

Any ideas on where to begin troubleshooting ?

thx

-- Stan

Stanley Krute
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Posts: 5
Joined: Fri Jul 14, 2017 2:36 am

Re: LM 18.2 xfce -- Lenovo T520 -- no sound

Post by Stanley Krute » Fri Jul 14, 2017 6:50 pm

I did the following :

Reinstalled the driver

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 sudo apt-get remove --purge alsa-base pulseaudio
 sudo apt-get install alsa-base pulseaudio
Reloaded the driver

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 sudo alsa force-reload
Then rebooted. I now had sound, which I checked by playing a video.

Then sound went away. I toggled Auto-Mute in AlsaMixer from Disabled to Enabled to Disabled, and sound came back again.

Some weird bug going on, eh ?? All thoughts invited.

dave8671
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Posts: 88
Joined: Sat Jul 23, 2016 7:04 pm

Re: LM 18.2 xfce -- Lenovo T520 -- no sound

Post by dave8671 » Sun Jan 07, 2018 3:24 pm

I would be running cinnamon on this laptop it more than powerful enough why are you running xfce? I am planning on getting a T520 myself I got to decide on which first. I know that laptop has a Intel 3000. Disable the nvidia in the BIOS and use the Intel. Nvidia GPU's eat battery life most of the time. Nvidia Optimus really only works in windows.

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