Difference between revisions of "CM-T335: Linux: Known Issues"

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{{IssueCategory|Enlightenment Window Manager|
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{{IssueCategory|Network interface name change|
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* If the '''Touchscreen''' profile is selected the '''Settings Panel''' doesn't have '''Profiles''' setting menu. It is not possible to switch the profile.
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* Network interface name can change if used with rootfs on NFS by more then a single CM-T335 unit.
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:'''Workaround :''' Launch the {{cmd|xterm}} from '''Applications->Accessories''' and change the default profile from the command line:
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:'''Workaround 1:''' Delete the udev persistent network interface rules file - should be repeated after every unit replacement:
 
<pre>
 
<pre>
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enlightenment_remote -default-profile-set Standard-copy
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root@cm-debian:~# rm /etc/udev/rules.d/70-persistent-net.rules
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root@cm-debian:~# reboot
 
</pre>
 
</pre>
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}}
 
  
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{{IssueCategory|Frame buffer console|
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:'''Workaround 2:''' Disable persistent network interface rules:
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* Sometimes the '''Frame buffer console''' is not visible and not possible to use.
 
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:'''Workaround :''' Use the serial or network ssh console.
 
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}}
 
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{{IssueCategory|Bluetooth initialization timed out|
 
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* Sometimes attaching the ttyO1 serial port to the HCI Bluetooth subsystem can time out with the following message:
 
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<pre>
 
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root@cm-debian:~# hciattach -s 115200 /dev/ttyO1 texas 3000000
 
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Initialization timed out.
 
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</pre>
 
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:'''Workaround :''' Reset the WL1271 Bluetooth module manually, then run the '''hciattach''' command again:
 
 
<pre>
 
<pre>
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root@cm-debian:~# echo 0 > /sys/class/gpio/gpio19/value
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root@cm-debian:~# echo "# disable net-generator rules in /lib/udev" > /etc/udev/rules.d/75-persistent-net-generator.rules
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root@cm-debian:~# echo 1 > /sys/class/gpio/gpio19/value
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root@cm-debian:~# reboot
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root@cm-debian:~# hciattach -s 115200 /dev/ttyO1 texas 3000000
 
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Found a Texas Instruments' chip!
 
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Firmware file : /lib/firmware/TIInit_7.6.15.bts
 
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Loaded BTS script version 1
 
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texas: changing baud rate to 3000000, flow control to 1
 
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[  406.694167] Bluetooth: HCI UART driver ver 2.2
 
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[  406.698847] Bluetooth: HCI H4 protocol initialized
 
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[  406.703912] Bluetooth: HCI BCSP protocol initialized
 
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[  406.709097] Bluetooth: HCILL protocol initialized
 
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Device setup complete
 
 
</pre>
 
</pre>
 
}}
 
}}

Latest revision as of 17:18, 15 September 2016

Network interface name change
  • Network interface name can change if used with rootfs on NFS by more then a single CM-T335 unit.
Workaround 1: Delete the udev persistent network interface rules file - should be repeated after every unit replacement:
root@cm-debian:~# rm /etc/udev/rules.d/70-persistent-net.rules
root@cm-debian:~# reboot
Workaround 2: Disable persistent network interface rules:
root@cm-debian:~# echo "# disable net-generator rules in /lib/udev" > /etc/udev/rules.d/75-persistent-net-generator.rules
root@cm-debian:~# reboot
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