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by vmsda
Sun Apr 28, 2013 5:57 pm
Forum: Troubleshooting
Topic: USB redux
Replies: 514
Views: 198622

Re: USB redux

drgeoff wrote: ... Some people may even think the more pertinent question is "Can or will there ever be a fix such that the RPi's USB works to the same (admittedly not 100%) level as is routinely expected on other platforms?"...
Amen to that.
by vmsda
Mon Apr 08, 2013 11:15 am
Forum: Debian
Topic: Upgrade fails due to Python3.2 problem
Replies: 1
Views: 741

Upgrade fails due to Python3.2 problem

After trying to do the preventive "sudo apt-get upgrade" (after the "update"), I get the following for the first time: Reading package lists... Done Building dependency tree Reading state information... Done You might want to run 'apt-get -f install' to correct these. The following packages have unm...
by vmsda
Thu Apr 04, 2013 1:01 pm
Forum: Python
Topic: Python3, Tkinter, touch screen
Replies: 3
Views: 3605

Re: Python3, Tkinter, touch screen

No touch screen here and using Python 2, but if you can get your X running and usable with the touch screen, a Python+Tkinter app should work too (depending of UI design of course). I have read that Ubuntu is installable on some tablets - by definition touchy :lol: - so the drivers or whatever are ...
by vmsda
Thu Apr 04, 2013 12:24 am
Forum: Python
Topic: Python3, Tkinter, touch screen
Replies: 3
Views: 3605

Python3, Tkinter, touch screen

Has anybody managed to get an appl going with the subject combination?
Thanks for ideas.
by vmsda
Sun Mar 31, 2013 11:38 am
Forum: Graphics, sound and multimedia
Topic: RPi and real-time, low-latency audio
Replies: 189
Views: 75720

Re: RPi and real-time, low-latency audio

Thanks even though the output of lsusb is incomplete. I've reread the relevant posts but could you explain a bit more what the exact issue is? lsusb -vvv Bus 001 Device 002: ID 0424:9512 Standard Microsystems Corp. Couldn't open device, some information will be missing Device Descriptor: bLength 18...
by vmsda
Fri Mar 29, 2013 9:42 am
Forum: Troubleshooting
Topic: USB performance: Isochronous (audio or video)
Replies: 21
Views: 15067

Re: USB performance: Isochronous (audio or video)

Paul Webster wrote:(re PMs - I think they stay in Outbox until recipient reads them)
Thank you, Paul, that was indeed news to me.
by vmsda
Thu Mar 28, 2013 7:06 pm
Forum: Troubleshooting
Topic: USB performance: Isochronous (audio or video)
Replies: 21
Views: 15067

Re: USB performance: Isochronous (audio or video)

Crossposting: Latest rpi-update kernel (3.6.11+ #399) contains a fix that is reported by several users in the USB redux thread to work well with webcams (Isoc IN) - what I would like is more info for sound devices ... I updated the firmware as you suggested and tried a high-rez download but alas, i...
by vmsda
Thu Mar 28, 2013 11:35 am
Forum: Troubleshooting
Topic: USB redux
Replies: 514
Views: 198622

Re: USB redux

In the "Graphics, sound and multimedia" forum I have complained about occasional crackling noises in the reproduction of CD-quality music files, and the absolute impossibility of servicing 96khz/24bit music downloads. "azeam" has kindly informed me that "This is a known issue and there are several t...
by vmsda
Thu Mar 28, 2013 11:07 am
Forum: Graphics, sound and multimedia
Topic: Get 192khz/24bit working?
Replies: 10
Views: 15614

Re: Get 192khz/24bit working?

smashedcrab wrote:If dwc_otg.speed=1 Does NOT work. .

I found one can edit the cmdline.txt file on the flash disk from another machine (eg windows) !
... or from any Linux distro for that matter ...
by vmsda
Wed Mar 27, 2013 3:17 pm
Forum: Graphics, sound and multimedia
Topic: RPi and real-time, low-latency audio
Replies: 189
Views: 75720

Re: RPi and real-time, low-latency audio

Here goes, with thanks for help: cat /proc/asound/cards 0 [ALSA ]: BRCM bcm2835 ALSbcm2835 ALSA - bcm2835 ALSA bcm2835 ALSA 1 [B10 ]: USB-Audio - Benchmark 1.0 Texas Instruments Benchmark 1.0 at usb-bcm2708_usb-1.3.2, full speed idProduct 0x0002 2.0 root hub bcdDevice 3.06 iManufacturer 3 Linux 3.6....
by vmsda
Wed Mar 27, 2013 12:11 pm
Forum: Graphics, sound and multimedia
Topic: RPi and real-time, low-latency audio
Replies: 189
Views: 75720

Re: RPi and real-time, low-latency audio

In fact my device can only do 192/24 via the S/PDIF or Toslink interfaces; it is in fact a usb1.1 device, via which it can do max 96/24. The problem must lie somewhere else (RPi driver for usb?).
by vmsda
Wed Mar 27, 2013 11:24 am
Forum: Graphics, sound and multimedia
Topic: RPi and real-time, low-latency audio
Replies: 189
Views: 75720

Re: RPi and real-time, low-latency audio

I switched to USB1.1 mode, by tweaking the boot cmdfile.txt as advised. The system produced no sound whatsoever, with any type of file. Got the following in the console: dmesg 5:1:1: cannot get freq at ep 0x1 [ 297.124071] INFO:: schedule_periodic: Insufficient periodic bandwidth for periodic transf...
by vmsda
Tue Mar 26, 2013 11:42 pm
Forum: Graphics, sound and multimedia
Topic: RPi and real-time, low-latency audio
Replies: 189
Views: 75720

Re: RPi and real-time, low-latency audio

OK, thank you so much.
by vmsda
Tue Mar 26, 2013 11:39 pm
Forum: HATs and other add-ons
Topic: Replacing interfaces ?
Replies: 6
Views: 1009

Re: Replacing interfaces ?

aTao wrote: Your best bet would be to buy a complete board and remove (de solder or grind off)any components you dont want.
Exactly, thank you. Anybody tried this before?
by vmsda
Tue Mar 26, 2013 9:59 pm
Forum: HATs and other add-ons
Topic: Replacing interfaces ?
Replies: 6
Views: 1009

Re: Replacing interfaces ?

tonyhughes wrote: ... Or are you wanting to buy just one?
One or two! Just would like to replace those chunky interface connectors sitting atop the Broadcom board. For instance, my Samsung has a ridiculously small eth interface ... and they supply the cable to connect the pc to a normal lan.
by vmsda
Tue Mar 26, 2013 9:42 pm
Forum: Graphics, sound and multimedia
Topic: RPi and real-time, low-latency audio
Replies: 189
Views: 75720

Re: RPi and real-time, low-latency audio

If I do everything the wiki suggests as far as usb audio is concerned, do I stand a chance of playing my 192khz/24bit downloads, or is this type of throughput just too much for the Pi?
by vmsda
Tue Mar 26, 2013 9:24 pm
Forum: HATs and other add-ons
Topic: Replacing interfaces ?
Replies: 6
Views: 1009

Replacing interfaces ?

Is is possible to buy an unpopulated Broadcom BCM2835 board and then apply to it HDMI, ETH and USB micro interfaces, in order to reduce drastically the volume of the whole assembly, and still be able to run Wheezy on it (or any other Linux flavour, for that matter)?

Thank you for suggestions.
by vmsda
Tue Mar 26, 2013 4:47 pm
Forum: Graphics, sound and multimedia
Topic: Get 192khz/24bit working?
Replies: 10
Views: 15614

Re: Get 192khz/24bit working?

Dear Rasperry Pi community as high end hifi enthusiast, I appreciate the sound of flac files using 192khz/24bit quality. What settings/add ons/magic do I have to use, to get my Raspberry Pi (Version B, 512 MB RAM) playing back those files via HDMI? ... - I'd use any distro just to get it working. I...
by vmsda
Sat Mar 23, 2013 11:16 am
Forum: Debian
Topic: Edimax EW-7811Un and MrEngman's script
Replies: 9
Views: 20017

Re: Edimax EW-7811Un and MrEngman's script

Thank you for your help, "malaki". If I use a powered hub: lsusb Bus 001 Device 004: ID 1a40:0101 Terminus Technology Inc. 4-Port HUB Bus 001 Device 005: ID 7392:7811 Edimax Technology Co., Ltd EW-7811Un 802.11n Wireless Adapter [Realtek RTL8188CUS] If I do not use a powered hub, "lsusb" naturally s...
by vmsda
Sat Mar 23, 2013 12:05 am
Forum: Debian
Topic: Edimax EW-7811Un and MrEngman's script
Replies: 9
Views: 20017

Edimax EW-7811Un and MrEngman's script

Today I installed a brand new RPi from scratch, and despite following and checking with various wikis, I could not get the Edimax to work. So then decided to follow someone's advice and tried MrEngman's script. This is the output: An RTL8188CUS driver module is installed but is not loaded. You have ...
by vmsda
Thu Mar 21, 2013 11:54 pm
Forum: Arch
Topic: Wireless problem with Edimax EW-7811Un in Arch RPi
Replies: 3
Views: 2960

Re: Wireless problem with Edimax EW-7811Un in Arch RPi

... Look around /etc/systemd/system/multi-user.target.wants and delete symlinks that look like they are starting the network ... The netword-related symlinks in that file are lrwxrwxrwx 1 root root 38 Mar 21 20:45 netcfg.service -> /usr/lib/systemd/system/netcfg.service lrwxrwxrwx 1 root root 39 Ma...
by vmsda
Thu Mar 21, 2013 10:03 pm
Forum: Arch
Topic: Wireless problem with Edimax EW-7811Un in Arch RPi
Replies: 3
Views: 2960

Wireless problem with Edimax EW-7811Un in Arch RPi

After the dongle is inserted: lsusb Bus 001 Device 004: ID 7392:7811 Edimax Technology Co., Ltd EW-7811Un 802.11n Wireless Adapter [Realtek RTL8188CUS] dmesg usbcore: registered new interface driver rtl8192cu Then, I decided to follow recipe meted out by "pepedog" in another thread: "... Forget all ...
by vmsda
Thu Mar 21, 2013 6:57 am
Forum: Graphics, sound and multimedia
Topic: ALSA/MPD Crackling on sound reproduction
Replies: 6
Views: 2843

Re: ALSA/MPD Crackling on sound reproduction

azeam wrote:This is a known issue and there are several threads about this. It is caused by a USB bug that is being worked on...
Azeam: when the solution to the bug is released, how can we know about it? Is there any site we can peruse regularly for this kind of news? Thanks.
by vmsda
Wed Mar 20, 2013 8:03 pm
Forum: Graphics, sound and multimedia
Topic: ALSA/MPD Crackling on sound reproduction
Replies: 6
Views: 2843

Re: ALSA/MPD Crackling on sound reproduction

... Haven't noticed any problems with 16 bit audio though, as you say you have (using the latest stable kernel on Raspbian). As I said, with 16-bit audio it is the occasional crackle, but in the ethereal world of hi-fi, it is like being stung by a pin in the middle of an Adagio. With 24-bit audio, ...
by vmsda
Wed Mar 20, 2013 7:24 pm
Forum: Graphics, sound and multimedia
Topic: ALSA/MPD Crackling on sound reproduction
Replies: 6
Views: 2843

Re: ALSA/MPD Crackling on sound reproduction

azeam wrote:... The current workaround is to limit the USB to 1.1 by adding dwc_otg.speed=1 to /boot/cmdline.txt
Unfortunately, for me, it does not work, not a sound whatsoever came out. Guess I shall have to wait for the work in progress.

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