Description of problem: Doing "cat /dev/dsp" freezes the system instantly and completely. Version-Release number of selected component (if applicable): kernel-2.6.5-1.358 How reproducible: Every time. Steps to Reproduce: 1. Boot Fedora Core 2. 2. Type "cat /dev/dsp" in a Terminal window 3. Observe how mouse cursor doesn't move anymore Actual results: Total freeze. Expected results: A pile of DSP garbage in the Terminal window. Additional info: The /dev/dsp should normally correspond to my USB soundcard, which for some unknown reason gets installed as the first card. The USB module is connected to a USB2.0 hub. This same hardware setup works great with kernel 2.4.22 and alsa-1.0.4. [12:49] localhost:/proc/asound/oss>cat sndstat Sound Driver:3.8.1a-980706 (ALSA v1.0.4rc2 emulation code) Kernel: Linux localhost.localdomain 2.6.5-1.358 #1 Sat May 8 09:04:50 EDT 2004 i686 Config options: 0 Installed drivers: Type 10: ALSA emulation Card config: Micronas GN Netcom USB Digital Audio at usb-0000:00:1d.7-1.1, full speed Intel 82801DB-ICH4 at 0xd4000000, irq 6 Audio devices: NOT ENABLED IN CONFIG Synth devices: NOT ENABLED IN CONFIG Midi devices: NOT ENABLED IN CONFIG Timers: 7: system timer Mixers: 0: USB Mixer 1: Analog Devices AD1980 [12:49] localhost:/proc/asound/oss>
Reproduced also with Linux 2.6.6. rmmod ehci_hcd fixes the problem, no freezes occur when only uhci_hcd is present.
Fedora Core 2 has now reached end of life, and no further updates will be provided by Red Hat. The Fedora legacy project will be producing further kernel updates for security problems only. If this bug has not been fixed in the latest Fedora Core 2 update kernel, please try to reproduce it under Fedora Core 3, and reopen if necessary, changing the product version accordingly. Thank you.