Connecting 2560x1440 screen to a U410 over HDMI

Hi, Im a new owner of U410 IdeaPad.
I bought this machine with the intention to hook it up to a WQHD (2560x1440) screen.
The screen I intend to get has no limitation on being fed over HDMI with this resolution (supports 1.4 HDMI).
What I have found out is that I might have a problem with the machine not supporting this resolution over HDMI.
My question is whether U410 with its dedicated Nvidia 610M (in addition to HD4000) sitting on Intels HM77 chipset will allow me to output WQHD resolution over the HDMI, or at least wether this HDMI connection is of 1.4 version.
Thank you very much.

Thanks for the reply
can you reference me to the source/s which confirm the 1.4 support (I'm a bit uptight about it since I am going to order the screen online without the option to return so I don't want to find myself owning a 27" HD-TV instead of a WQHD screen).
There is apparently an issue with HDMI and above 1080 resolutions, a few manufacturers (of both chipsets and monitors) made a bad assumption that HDMI = 1080p for the home user even though the interface can support more then that but they capped it at 1080.
For example
http://communities.intel.com/thread/30360
http://forum.notebookreview.com/hardware-components-aftermarket-upgrades/633598-dell-u2711-hdmi-2560...
- with wifi I had no problem what so ever (used both at home and in public). its manufacture date 06/06/12

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UPDATE 1: After a good night's sleep, and after doing a bit more reading on alsa-project.org (big props to this page), I managed to get a much better ~/.asoundrc together. It solves all my problems, and I can do everything I need. I've preserved the post below in case anyone else runs into these issues, and I'll post my solution as a response to this post.
UPDATE 2: Looks like I celebrated too early. Got more strange problems. Screw it, I'm going back to PulseAudio. I just wrote a wrapper script to kill and restart Pulse for applications that really, really need ALSA.
Okay. I've almost completely worn out my fingers trying to get this working. I feel like I'm playing Whack-a-Mole. This is a bit of a lengthy post, but I'll try my best to describe every problem I've encountered in as much detail as I can, followed by the solutions I found, followed by the problems each solution brought with it. By going through everything this way, mole by mole, hopefully it'll be easy to follow along and help me come to a universally working solution.
Summarized Version of Problems:
5.1 surround works only on specific applications which are robust enough to allow me to manually specify audio output options, and only if ALSA isn't configured at all
once I've configured ALSA, sound works on every application, but it's all downmixed to 2.0 stereo from this point on
installing PulseAudio lets me choose 5.1 surround as a default, but brings with it its own problems and drawbacks, namely the lack of passthrough support for encoded streams
Long-Winded Version:
I have my computer connected over HDMI to an AVR with a 5.1 surround speaker system. At first, I didn't have anything configured in ~/.asoundrc (or its global equivalent, /etc/asound.conf). Neither file existed, so everything was running off defaults. I got the name and device number of my card from aplay, ran speaker-test and played a six-channel test file in mplayer.
$ aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: HDMI [HDA Intel HDMI], device 3: HDMI 0 [HDMI 0]
Subdevices: 1/1
Subdevice #0: subdevice #0
$ aplay -L
null
Discard all samples (playback) or generate zero samples (capture)
pulse
PulseAudio Sound Server
hdmi:CARD=HDMI,DEV=0
HDA Intel HDMI, HDMI 0
HDMI Audio Output
$ speaker-test -Dhdmi -c6
speaker-test 1.0.28
Playback device is hdmi
Stream parameters are 48000Hz, S16_LE, 6 channels
Using 16 octaves of pink noise
Rate set to 48000Hz (requested 48000Hz)
Buffer size range from 64 to 349504
Period size range from 32 to 174752
Using max buffer size 349504
Periods = 4
was set period_size = 174752
was set buffer_size = 349504
0 - Front Left
4 - Front Center
1 - Front Right
3 - Rear Right
2 - Rear Left
5 - LFE
Time per period = 21.868405
$ mplayer -ao alsa:device=hdmi -channels 6 Nums_5dot1_24_48000.wav
MPlayer SVN-r37224 (C) 2000-2014 MPlayer Team
210 audio & 441 video codecs
mplayer: could not connect to socket
mplayer: No such file or directory
Failed to open LIRC support. You will not be able to use your remote control.
Playing Nums_5dot1_24_48000.wav.
libavformat version 55.33.100 (internal)
Audio only file format detected.
Load subtitles in ./
==========================================================================
Opening audio decoder: [pcm] Uncompressed PCM audio decoder
AUDIO: 48000 Hz, 6 ch, s24le, 6912.0 kbit/100.00% (ratio: 864000->864000)
Selected audio codec: [pcm] afm: pcm (Uncompressed PCM)
==========================================================================
[AO_ALSA] Format s24le is not supported by hardware, trying default.
AO: [alsa] 48000Hz 6ch s16le (2 bytes per sample)
Video: no video
Starting playback...
A: 8.6 (08.5) of 9.0 (09.0) 0.3%
Exiting... (End of file)
Everything seemed well, all six channels played from the correct location on both tests, but I did realize that the device number of the card was 3, not 0. A lot of applications that aren't as configurable expect the default card/device to be set properly, and audio won't work in those applications without specifying that in ALSA's configuration. Knowing this, I set the following in my ~/.asoundrc:
pcm.!default {
type hw
card HDMI
device 3
ctl.!default {
type hw
card HDMI
device 3
This, however, ended up causing more problems. Oh, it made sound work on everything by default after that, but only for one application at a time! That surpised me, as I thought ALSA's big advantage over OSS is that it can multitask. Running the speaker-test the way I did earlier turned out fine, but when I tried playing that test file in mplayer, things got weird again. Here's the output from mplayer:
$ mplayer -ao alsa -channels 6 Nums_5dot1_24_48000.wav
MPlayer SVN-r37224 (C) 2000-2014 MPlayer Team
210 audio & 441 video codecs
mplayer: could not connect to socket
mplayer: No such file or directory
Failed to open LIRC support. You will not be able to use your remote control.
Playing Nums_5dot1_24_48000.wav.
libavformat version 55.33.100 (internal)
Audio only file format detected.
Load subtitles in ./
==========================================================================
Opening audio decoder: [pcm] Uncompressed PCM audio decoder
AUDIO: 48000 Hz, 6 ch, s24le, 6912.0 kbit/100.00% (ratio: 864000->864000)
Selected audio codec: [pcm] afm: pcm (Uncompressed PCM)
==========================================================================
[AO_ALSA] alsa-lib: pcm_hw.c:1557:(snd_pcm_hw_open) open '/dev/snd/pcmC0D0p' failed (-2): No such file or directory
[AO_ALSA] Playback open error: No such file or directory
Failed to initialize audio driver 'alsa'
Could not open/initialize audio device -> no sound.
Audio: no sound
Video: no video
Exiting... (End of file)
Why the hell is it looking for pcmC0D0p? It should be looking at pcmC0D3p. Did it not get the memo from ~/.asoundrc? Urgh.
I've also tried '-af channels=6' in place of '-channels 6' but the same result happened. It does the same thing without the '-ao alsa' option, I just specified it to trim down the output, so that I wouldn't be copying and pasting all kinds of other errors about not finding OSS or JACK or other things I don't have installed.
If I symlink /dev/snd/pcmC0D0p to /dev/snd/pcmC0D3p, it'll fix the problem, but that feels like one ugly kludge. I'd have to do it again over and over every time I reboot, too.
Not sure if this would help matters or not, but if anyone knows how to change my card's device number from 3 to 0, I'd like to try that as well, but I'm not sure how to do that sort of thing. I'm just guessing it might be worth trying, since everything looks for card0/device0 by default, and that kludge I tried earlier did have an effect, so maybe if we can just switch those device numbers with each other, everything would work smoothly without having to force anything through ALSA's configuration at all. I believe card0/device0 belongs to the Host Bridge... is there a way to have them trade their device numbers for one another's in a safe manner?
I can also get it to play if I specify the device like I did in my first test, using '-ao alsa:device=hdmi', but that defeats the purpose of getting good defaults set if I still have to set everything by hand before I play something. If I try playing the test file without any options, like so:
$ mplayer Nums_5dot1_24_48000.wav
... it will play, but only in two-channel stereo, and the parts that should happen in the center, rear and LFE channels get downmixed into the left and right channels.
I can get it to work in aplay, though! All six channels! Not that I plan on using this as my primary multimedia software.
$ aplay -c6 Nums_5dot1_24_48000.wav
The only solution I found so far that allows me to have 5.1 audio by default is to install the PulseAudio server, which is able to find a sink/source named 'alsa_output.pci-0000_00_03.0.hdmi-surround' and lets me choose that as my default. Only problem with this is that PulseAudio has its own problems.
Aside from the crackling sound issues in some Wine games, Pulse also has a much bigger drawback -- a complete lack of passthrough support, meaning I can't use encoded streams such as Dolby DTS and TrueHD with PulseAudio. I have a Harman/Kardon AVR and I'd like to get my money's worth out of it, so I'd really like to figure out a solution in ALSA without using Pulse at all.
Does anyone know how I can have my cake and eat it, too? I just need 5.1 surround, by default, in ALSA without PulseAudio.
HUGE thanks to anyone who tries to help here. This is really making me sad and frustrated, I've been using Arch for quite a while now and this is the first real big stumper I've come across that forced me to post a thread. Otherwise I've been having a wonderful time.
Edited because I tried something different that removed *some* issues, but the above problems still remain.
Last edited by Rybelda (2014-10-27 22:10:24)

Well, I thought I fixed it doing this...
pcm.!default {
type plug
slave.pcm "dmixer"
pcm.dmixer {
type dmix
ipc_key 1138
ipc_key_add_uid true
slave {
pcm "hw:0,3"
format S32_LE
channels 8
rate 192000
period_size 9600
buffer_size 38400
... but then realized it strangely makes applications that run at 640x480 have no sound at all. No idea why the video resolution is screwing up the sound, but that's what's happening, because if I set the resolution any higher, the sound comes back.
I'm going back to PulseAudio, I feel like ALSA is mocking me. I wrote a wrapper script for the few times where pure, Pulse-less ALSA will be necessary for me. Here it is, in case it helps anyone else. I've tested it with XBMC, it turns off Pulse and allows ALSA to pass through encoded streams unhindered. It also works with some Wine applications that have scratchy audio glitches in Pulse.
#!/bin/bash
echo "autospawn = no" > $HOME/.config/pulse/client.conf
pulseaudio --kill &> /dev/null
"$*"
rm -f $HOME/.config/pulse/client.conf
pulseaudio --start &> /dev/null
I'm removing the SOLVED tag because technically I didn't resolve any of my original issues, I more or less gave up on what I wanted to do and found another way to satisfy my needs, but it still isn't as elegant as I had hoped for. In any case, I'm done with this issue for now and the forseeable near-future, but if anyone has anything further to add, feel free.
Last edited by Rybelda (2014-10-27 22:32:55)

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Hello yatesteve,
Thanks for using Apple Support Communities.
To troubleshoot this issue please follow the steps in the article linked to below, in the section titled "No video or no signal, image distortion, "snow," or flickering."
Apple computers: Troubleshooting issues with video on internal or external displays
http://support.apple.com/kb/HT1573
Take care,
Alex H.

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Subdevices: 1/1
Subdevice #0: subdevice #0
card 1: NVidia [HDA NVidia], device 9: NVIDIA HDMI [NVIDIA HDMI]
Subdevices: 1/1
Subdevice #0: subdevice #0
What I noticed is that dmesg does not show any hdmi hotplug event, something like: "HDMI hot plug event: Pin=5 Presence_Detect=1 ELD_Valid=0"
So I thought maybe you arch linux people have some creative ideas what the problem is here?
PS: It can't be the hardware because it works with windows7.

.:B:. wrote:Does audio over HDMI work when the nvidia module isn't loaded? The 1st gen AppleTV has that issue, but I cannot imagine nVidia's ION platforms suffering from the same problem on Linux...
No, does not work either... I need to help to figure out why the hotplugging and detecting of the receiver does not even work.

Sound over HDMI works halfway.[SOLVED]

//After looking around, HDMI only sends the signals to turn down the HDMI connected device. I guess it's as good as it gets...//
Using nVidia GT218 [ION] on Zotac Hd-id11.
NVIDIA Driver Version: 260.19.44
2.6.37-ARCH
//pianobar uses libao. My config, ~/.libao, looks like this and fixed pianobar over hdmi//
default_driver=alsa
dev=hw:1,3
Sound works over HDMI for most of my applications(Flash, Gnome player, Skype) but I have no volume leveler under alsamixer nor does pianobar output to HDMI unless I launch it twice. The error that allows pianobar to work over HDMI is
ao_alsa WARNING: Unable to open surround playback. Trying default device...
I'm wondering, is there something I'm missing?
//this will have 4 outputs if you don't use sound.conf instead of just one//
What alsamixer looks like on card 1
//if you don't use a sound.conf file(see next section) the defaults will probably be hw1,7)//
This plays "Front Center" over HDMI.
$ aplay -D plughw:1,3 /usr/share/sounds/alsa/Front_Center.wav
Playing WAVE '/usr/share/sounds/alsa/Front_Center.wav' : Signed 16 bit Little Endian, Rate 48000 Hz, Mono
$ cat /etc/asound.conf
pcm.!default {
type plug
slave.pcm {
type hw
card 1
device 3
//Turns out I didn't have to even make a sound.conf//
$ cat /etc/modprobe.d/sound.conf
options snd-hda-intel enable_msi=0 probe_mask=0xffff,0xfff2
//snd_hda_codec_realtek is the codec used to replace snd_hda_codec_nvhdmi, make sure it's loaded//
$ lsmod|grep '^snd' | column -t
snd_hda_codec_hdmi 20024 1
snd_hda_codec_realtek 224540 1
snd_seq_dummy 1119 0
snd_seq_oss 25232 0
snd_seq_midi_event 4568 1 snd_seq_oss
snd_seq 41912 5 snd_seq_dummy,snd_seq_oss,snd_seq_midi_event
snd_pcm_oss 33950 0
snd_mixer_oss 15366 1 snd_pcm_oss
snd_usb_audio 70888 0
snd_hda_intel 18988 3
snd_usbmidi_lib 15361 1 snd_usb_audio
snd_hda_codec 64796 3 snd_hda_codec_hdmi,snd_hda_codec_realtek,snd_hda_intel
snd_hwdep 4804 2 snd_usb_audio,snd_hda_codec
snd_pcm 59496 6 snd_hda_codec_hdmi,snd_pcm_oss,snd_usb_audio,snd_hda_intel,snd_hda_codec
snd_timer 15687 2 snd_seq,snd_pcm
snd_rawmidi 15512 1 snd_usbmidi_lib
snd_page_alloc 6021 2 snd_hda_intel,snd_pcm
snd_seq_device 4409 4 snd_seq_dummy,snd_seq_oss,snd_seq,snd_rawmidi
snd 43987 20 snd_hda_codec_hdmi,snd_hda_codec_realtek,snd_seq_oss,snd_seq,snd_pcm_oss,snd_mixer_oss,snd_usb_audio,snd_hda_intel,snd_usbmidi_lib,snd_hda_codec,snd_hwdep,snd_pcm,snd_timer,snd_rawmidi,snd_seq_device
$ ls -l /dev/snd
total 0
drwxr-xr-x 2 root root 80 Mar 13 10:22 by-path
crw-rw----+ 1 root audio 116, 8 Mar 13 10:22 controlC0
crw-rw----+ 1 root audio 116, 11 Mar 13 10:22 controlC1
crw-rw----+ 1 root audio 116, 7 Mar 13 10:22 hwC0D2
crw-rw----+ 1 root audio 116, 10 Mar 13 10:22 hwC1D1
crw-rw----+ 1 root audio 116, 6 Mar 13 10:22 pcmC0D0c
crw-rw----+ 1 root audio 116, 5 Mar 13 19:40 pcmC0D0p
crw-rw----+ 1 root audio 116, 4 Mar 13 10:22 pcmC0D1p
crw-rw----+ 1 root audio 116, 9 Mar 13 19:38 pcmC1D3p
crw-rw----+ 1 root audio 116, 3 Mar 13 10:22 seq
crw-rw----+ 1 root audio 116, 2 Mar 13 10:22 timer
Last edited by seca (2011-03-22 03:43:43)

I am also having this problem... I get this error when I play certain songs in pianobar:
ao_alsa WARNING: Unable to open surround playback. Trying default device...
I am not sure how to fix this

Qosmio G50 No sound over HDMI

*Qosmio G50 No sound over HDMI*
Hi all,
Hopefully anyone recognises the following and would be so kind to help me. I have searched the forum and tried severall of the offered solutions mainly applicable to Vista, but still.
I hooked up my Qosmio G50 to my Philips LCD by HDMI cable. Picture is ok but there is no sound. I tested the cable with a Toshiba Satelite Pro L550 and it works allright. Picture and Sound are working. But that laptop has Intel HDMI audio.
I'm running Windows 7 Home Premium 64 bit. I upgraded by Toshiba update DVD from Vista 64 bit. Sadly I do not know for sure if HDMI audio did work before that. I think so because I did use the laptop for watching a movie on a Panasonic plasma. But I can not remember if that was before or after the upgrade.
Realtek HD Audio device is installed driver version 6.0.1.5923
Realtek HDMI Output is selected als default playback device.
Testing gives me graphical response ( the indicator flashes ) but no audible sound from my tv.
Choosing the other audio device Realtek Digital output changes nothing and I do not believe that this would work anyway.
I have tried removing the device and reinstalling the original drivers. I have tried REaltek drivers from their website.
I have tried changing the view to HDMI only but that does nog change anything either.
One thing that worries me is that under Sound / Realtek HDMI Output / properties / Supported Formats there are no formats present. The Satelite gives me DTS audio and some other. So I am wondering if there should be formats present and if so how can I change this / add any.
Please forgive me if there are errors in the text. I am translating this from a dutch language version of Windows 7.
Please help me. Any suggestions are welcome!

Jeka-?? & PinkPanther thanks for your replies!
The solution for the G30 you mention is not the one for me I am sorry to say. I have tried that one allready. Windows automatically switches on the HDMI audio out when I connect an HDMI cable. Connecting the cable before switching on the TV and laptop is a good thing to try because it eliminates possible problems with the connection. The connection in my case is ok.
At some point I concluded that there must be a softwareproblem of some sort.
I have found the solution over night. Could not sleep anyway. I did not know that the videodrivers are also handling HDMI audio out but in a way it makes sense. I have completely deinstalled the NVIDIA video drivers. After downloading the latest drivers and installing them everything works absolutely fine!

Envy M6 (c2l95ua#ABL) - Windows 8 - Turn on second display (TV over HDMI) as computer wakes

I want my TV (used as a second display over HDMI) to turn on automatically as the laptop turns on or resumes from sleep/hibernation. (As does a monitor on a desktop PC or the built-in screen on a laptop)
CEC (Consumer Electronics Control) is supposed to allow to turn on TV over HDMI.
The television is CEC compatible and has CEC option turned on. Theres also an option called "Allow CEC compatible devices to turn on television", which is turned on.
Can this laptop turn on a TV through HDMI, with or without CEC?
How?
Thanks a lot.

Thanks for the reply.
Is the T.V. entering standby or powering off after a certain amount of time?
The TV is in what the manufacturer calls standby-mode.
http://www.insigniaproducts.com/products/televisions/NS-39E340A13.html
What model is the T.V.?
http://www.insigniaproducts.com/products/televisions/NS-39E340A13.html
TheT.V. should wake from standby upon receiving a signal from the notebook.
I agree. It should.
To the best of my knowledge, the notebook will not turn the T.V. on from a powered off state. At least, I haven't found any indication that this model will.
Anyone else has a solution? There could be a way to turn it on from off state if HDMI CEC is implemented by HP.
Or another way..?

Connecting 2560x1440 screen to a U410 over HDMI

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