CM-QS600: Linux: Known Issues

Audio Output

Once some audio output (either the analog or digital) is enabled it cannot be disabled: root@cm-debian:~# alsaucm -c apq8064-tabla-snd-card set _verb HiFi set _disdev Headphones Segmentation fault root@cm-debian:~# alsaucm -c apq8064-tabla-snd-card set _verb HDMI set _disdev HDMI-stereo Segmentation fault Workaround : Reboot the device and enable only required output.

Package Manager

Public key problem is reported while retrieving new lists of packages: root@cm-debian:~# apt-get update Get:1 http://ftp.debian.org wheezy Release.gpg [2390 B] Get:2 http://ftp.debian.org wheezy Release [168 kB] ... Fetched 16.0 MB in 24s (662 kB/s) Reading package lists... Done W: There is no public key available for the following key IDs: 7638D0442B90D010 Workaround : Install debian-keyring and debian-archive-keyring packages. Note : This operation requires ~50MB of additional disk space. root@cm-debian:~# apt-get install debian-keyring debian-archive-keyring

USB Device Information

Running lsusb command returns entries with device information missing ... Bus 001 Device 003: ID 0409:005a NEC Corp. HighSpeed Hub Bus 001 Device 004: ID 1bc7:0021 Bus 001 Device 005: ID 22b8:0830 Motorola PCS 2386C-HT820 ... Solution : Update USB ID list. root@cm-debian:~# update-usbids --2015-06-18 10:49:48-- http://www.linux-usb.org/usb.ids Resolving www.linux-usb.org (www.linux-usb.org)... 216.34.181.97 Connecting to www.linux-usb.org (www.linux-usb.org)|216.34.181.97|:80... connected. HTTP request sent, awaiting response... 200 OK Length: 549314 (536K) [text/plain] Saving to: `/var/lib/usbutils/usb.ids.new' 100%[======================================>] 549,314 7.80K/s in 61s 2015-06-18 10:50:54 (8.78 KB/s) - `/var/lib/usbutils/usb.ids.new' saved [549314/549314] Done. root@cm-debian:~# lsusb ... Bus 001 Device 003: ID 0409:005a NEC Corp. HighSpeed Hub Bus 001 Device 004: ID 1bc7:0021 Telit Wireless Solutions HE910 Bus 001 Device 005: ID 22b8:0830 Motorola PCS 2386C-HT820 ...