Hello Lê Kiến Trúc,
Since this bug has been closed, I would suggest you to open a new one for 14.04
Thanks!
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https://bugs.launchpad.net/bugs/1278265
Title:
No HDMI/DP audio for Intel
HDMI sound output works fine with the stock image of ubuntu 12.04.4 but not for
14.04
alsamixer just displays S/PDIF for Intel ID 2807 but the volume is zero and I
can't increase
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Re-tested with 12.04.4 stock image on:
201304-13407 Dell E7240,
201306-13869 Dell Inspiron 7737,
201304-13210 Dell Inspiron 3437
HDMI audio works fine with the stock image,
you just need to reboot it after the installation has completed
Therefore, I will mark this bug as Invalid
For who is
Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: linux-lts-saucy (Ubuntu)
Status: New = Confirmed
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Also affects 201306-13869 Dell Inspiron 7737
00:03.0 Audio device [0403]: Intel Corporation Device [8086:0a0c] (rev 09)
Subsystem: Dell Device [1028:05fb]
Flags: bus master, fast devsel, latency 0, IRQ 61
Memory at d061 (64-bit, non-prefetchable) [size=16K]
** Changed in: linux-lts-saucy (Ubuntu)
Importance: Undecided = Low
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Title:
No HDMI/DP audio for Intel Lynx Point-LP HD Audio Controller
To
Also affects 201304-13210 Dell Inspiron 3437
00:03.0 Audio device [0403]: Intel Corporation Device [8086:0a0c] (rev 09)
Subsystem: Dell Device [1028:05f3]
Flags: bus master, fast devsel, latency 0, IRQ 61
Memory at f7e14000 (64-bit, non-prefetchable) [size=16K]
For 3.8 kernel, it's filed in bug 1183125
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Title:
No HDMI/DP audio for Intel Lynx Point-LP HD Audio Controller
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