[alsa-devel] ALSA Debugging
Hello, I am new to ALSA and Linux. I was trying to understand the ALSA architecture.
I have Linux Box with Intel sound card. with Suse 10.1 on it. I launched the audio player (Real player) and audio plays fine.
Then, I built the kernel and installed it. I put some printk's in intel8x0.cand control.c. (could see the my code was complied) Even though I changed volume muted etc couldn't see any of my printk in dmesg. One default printk in intel8x0.c was there, so I have put my print before that line as well, but couldn't see anything.
Apologies If my problem is very basic. I read on forums that best way to learn is to put printk's.
Can anyone help me with where I am doing incorrectly, Am I supposed to do it this way or some other way?
Thanks in advance -Vinod
First, verify that you are working with the correct driver. lsmod will tell you which sound drivers are loaded. If this is a newer system, you're probably using the snd-hda-intel driver, which is a whole lot different.
Tobin On Fri, 2008-03-21 at 20:45 +0530, Vinod Koul wrote:
Hello, I am new to ALSA and Linux. I was trying to understand the ALSA architecture.
I have Linux Box with Intel sound card. with Suse 10.1 on it. I launched the audio player (Real player) and audio plays fine.
Then, I built the kernel and installed it. I put some printk's in intel8x0.cand control.c. (could see the my code was complied) Even though I changed volume muted etc couldn't see any of my printk in dmesg. One default printk in intel8x0.c was there, so I have put my print before that line as well, but couldn't see anything.
Apologies If my problem is very basic. I read on forums that best way to learn is to put printk's.
Can anyone help me with where I am doing incorrectly, Am I supposed to do it this way or some other way?
Thanks in advance -Vinod _______________________________________________ Alsa-devel mailing list Alsa-devel@alsa-project.org http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
Thanks Tobin, Checked snd-intel8x0 is loaded.
Did rmmod and tried to insert with my compiled driver from my sources gives an error: "error inserting 'snd-intel8x0.ko' : -1 Invalid module format"
Checked from Yast, my sound card is 82801G AC'97, driver snd-intel8x0
-Vinod
On Fri, Mar 21, 2008 at 9:45 PM, Tobin Davis tdavis@dsl-only.net wrote:
First, verify that you are working with the correct driver. lsmod will tell you which sound drivers are loaded. If this is a newer system, you're probably using the snd-hda-intel driver, which is a whole lot different.
Tobin
On Fri, 2008-03-21 at 20:45 +0530, Vinod Koul wrote:
Hello,I am new to ALSA and Linux. I was trying to understand the ALSAarchitecture. I have Linux Box with Intel sound card. with Suse 10.1 on it.I launched the audio player (Real player) and audio plays fine. Then, I built the kernel and installed it. I put some printk's in intel8x0.candcontrol.c. (could see the my code was complied)Even though I changed volume muted etc couldn't see any of my printk indmesg. One default printk in intel8x0.c was there, so I have put my printbefore that line as well, but couldn't see anything. Apologies If my problem is very basic. I read on forums that best way tolearn is to put printk's. Can anyone help me with where I am doing incorrectly, Am I supposed to do itthis way or some other way? Thanks in advance-Vinod _______________________________________________Alsa-devel mailing listAlsa-devel@alsa-project.orghttp://mailman.alsa-project.org/mailman/listinfo/alsa-devel
-- Tobin Davis
The man on tops walks a lonely street; the "chain" of command is often a noose.
participants (2)
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Tobin Davis -
Vinod Koul