| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-Id: <200802052015.23170.ceho@chilan.com>
Date: Tue, 5 Feb 2008 20:15:23 +0100
From: Grzegorz Chwesewicz <ceho@...lan.com>
To: linux-kernel@...r.kernel.org
Cc: chilek@...lan.com
Subject: [BUG] Problem with recording on hda-intel (sata_sil or hda-intel bug) - HP nx6325
Hi.
Problem description:
I have a problem with recording on HP nx6325 notebook (hda-intel with AD1981HD
codec). Playback works fine, but after 5-10 min. of recording microphone
stops working (playback works all the time). Unloading and loading sound
modules fixes problem, but only for another 5-10 minutes. This problem exists
from more than a year (at least from 2.6.17.13 kernel). In [1] we came to
conclusion that this problem is ralated to IRQ sharing [2] (HDA Intel is on
the same IRQ as sata_sil).
How to reproduce the problem:
1) on one console run arecord and see the output (You should see some garbage)
2) on another console run cat /etc/*
3) at once arecord on the first console gives no output
So, doing lot of hdd I/O occurs problem with mic.
What had been done:
1) I tried to boot Fedora 8 livecd and unload sata_sil, so that hda_intel was
the only device using IRQ. After that microphone was working all the time (I
left recording for all night, and in the morning I had almost 2h voip chat
using Twinkle). So when sata_sil is unloaded, and hda-intel is not sharing
the IRQ, the mic. is working all the time. Look at [3] to
see /proc/interrupts output when laptop is booted from livecd, and mic works.
2) I tried to load hda-intel with enable_msi=1 (my RS480 chip is on blacklist,
but I've removed it). Module loads and playback works ok, but problem with
mic still exists. Difference here is that when recording stops to work the
playback also stops to work (without MSI only mic stops to work). Look at [4]
to see /proc/interrupts output when module is loaded with enable_msi=1.
Question:
What information I need to provide to help resolving the problem ? Where to
start, because I've run out of ideas :) ?
References:
[1] https://bugtrack.alsa-project.org/alsa-bug/view.php?id=2449
######################################
[2] cat /proc/interrupts (IRQ sharing)
CPU0 CPU1
0: 71953009 0 local-APIC-edge-fasteoi timer
1: 36662 1 IO-APIC-edge i8042
8: 1 1 IO-APIC-edge rtc
12: 147 1 IO-APIC-edge i8042
14: 49 2 IO-APIC-edge ide0
16: 681511809 679908107 IO-APIC-fasteoi sata_sil, HDA Intel
18: 29 1 IO-APIC-fasteoi
19: 430379 1 IO-APIC-fasteoi ehci_hcd:usb1, ohci_hcd:usb2, ohci_hcd:usb3
20: 0 1 IO-APIC-fasteoi sdhci:slot0, yenta
21: 1231834 9 IO-APIC-fasteoi acpi
23: 2273726 1 IO-APIC-fasteoi eth0
NMI: 0 0 Non-maskable interrupts
LOC: 0 71952388 Local timer interrupts
RES: 44883365 19180072 Rescheduling interrupts
CAL: 57631 790 function call interrupts
TLB: 7262 11762 TLB shootdowns
TRM: 0 0 Thermal event interrupts
SPU: 0 0 Spurious interrupts
ERR: 37465
MIS: 0
[ceho@...ima-hp ~]$ cat /proc/asound/version
Advanced Linux Sound Architecture Driver Version 1.0.15 (Tue Nov 20 19:16:42
2007 UTC).
[ceho@...ima-hp ~]$ uname -a
Linux ensima-hp 2.6.24 #7 SMP PREEMPT Mon Feb 4 20:34:21 CET 2008 i686 AMD
Turion(tm) 64 X2 Mobile Technology TL-56 AuthenticAMD GNU/Linux
######################################
[3] [fedora@...alhost ~]$ cat /proc/interrupts
CPU0 CPU1
0: 3014988 0 local-APIC-edge-fasteoi timer
1: 0 1881 IO-APIC-edge i8042
8: 0 1 IO-APIC-edge rtc
12: 0 151 IO-APIC-edge i8042
14: 2 17391 IO-APIC-edge libata
15: 0 0 IO-APIC-edge libata
16: 1 49 IO-APIC-fasteoi yenta, firewire_ohci, tifm_7xx1, sdhci:slot0
17: 0 23001 IO-APIC-fasteoi ohci_hcd:usb1, ohci_hcd:usb2, ehci_hcd:usb3
18: 0 260787 IO-APIC-fasteoi HDA Intel
20: 0 297695 IO-APIC-fasteoi eth1
21: 3 2304 IO-APIC-fasteoi acpi
NMI: 0 0
LOC: 0 3014807
ERR: 15
MIS: 0
[fedora@...alhost ~]$ cat /proc/asound/version
Advanced Linux Sound Architecture Driver Version 1.0.15 (Tue Oct 23 06:09:18
2007 UTC).
[fedora@...alhost ~]$ uname -a
Linux localhost.localdomain 2.6.23.1-42.fc8 #1 SMP Tue Oct 30 13:55:12 EDT
2007 i686 athlon i386 GNU/Linux
######################################
[4] cat /proc/interrupts
CPU0 CPU1
0: 51997092 0 local-APIC-edge-fasteoi timer
1: 50850 2 IO-APIC-edge i8042
8: 1 1 IO-APIC-edge rtc
12: 792 2 IO-APIC-edge i8042
14: 9331 2 IO-APIC-edge ide0
16: 0 1 IO-APIC-fasteoi yenta, sdhci:slot0
17: 3449488 190200 IO-APIC-fasteoi eth0
18: 492896 6 IO-APIC-fasteoi sata_sil
20: 457421 1 IO-APIC-fasteoi ehci_hcd:usb1, ohci_hcd:usb2,
ohci_hcd:usb3
21: 181549 9 IO-APIC-fasteoi acpi
220: 50035 1136607 PCI-MSI-edge HDA Intel
NMI: 0 0 Non-maskable interrupts
LOC: 0 51994900 Local timer interrupts
RES: 3435250 2342689 Rescheduling interrupts
CAL: 9842 2528 function call interrupts
TLB: 11148 18295 TLB shootdowns
TRM: 0 0 Thermal event interrupts
SPU: 0 0 Spurious interrupts
ERR: 113
MIS: 0
######################################
[4] I'll attach dmesg output in next message.
--
Greetings
Grzegorz Chwesewicz, Chilan
mailto:grzegorz.chwesewicz@...lan.com
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists