From Bugzilla Helper: User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.10) Gecko/20050716 Firefox/1.0.6 Description of problem: Sep 21 09:24:27 cisit6 kernel: piix4_smbus 0000:00:0f.0: Found 0000:00:0f.0 device Sep 21 09:24:28 cisit6 kernel: piix4_smbus 0000:00:0f.0: Unusual config register value Sep 21 09:24:28 cisit6 kernel: piix4_smbus 0000:00:0f.0: Try using fix_hstcfg=1 if you experience problems Sep 21 09:24:28 cisit6 kernel: piix4_smbus 0000:00:0f.0: Illegal Interrupt configuration (or code out of date)! I have an HP LC2000 netserver with FC4 (fully patched) installed. When I boot I get the above message. I don't know if I was getting this in earlier kerenels. I was checking the /var/log/messages for an error about a problem I was having and I saw the messages. Everything seems to work fine. Version-Release number of selected component (if applicable): 2.6.12-1.1447_FC4smp How reproducible: Always Steps to Reproduce: 1. install fc4 2. boot 2.6.12-1.1447 3. Additional info:
*** Bug 168943 has been marked as a duplicate of this bug. ***
BIOS bug. Do as it says (boot with fix_hstcfg=1) From the code.. /* Some BIOS will set up the chipset incorrectly and leave a register in an undefined state (causing I2C to act very strangely). */