Ralph Angenendt wrote: Hello. > Olaf Mueller wrote: >> /proc/acpi doesn't here exists, acpid is installed. Is my notebook >> too old? > That is entirely possible, yes. The 8000 is from ~1999? Yes, it is. I use it as a thin client (X -ac -port 177 -query <centos 5 server with kde 3.5.9>). > Might be that > the acpi bios is blacklisted. Searching for acpi in dmesg should give > more hints. # grep ACPI /var/log/dmesg BIOS-e820: 000000000fff0000 - 0000000010000000 (ACPI data) BIOS-e820: 00000000100b6e00 - 00000000100b7000 (ACPI NVS) ACPI: RSDP (v000 TOSHIB ) @ 0x000f0d90 ACPI: RSDT (v001 TOSHIB 750 0x00970814 TASM 0x04010000) @ 0x0fff0000 ACPI: FADT (v001 TOSHIB 750 0x00970814 TASM 0x04010000) @ 0x0fff0054 ACPI: BOOT (v001 TOSHIB 750 0x00970814 TASM 0x04010000) @ 0x0fff002c ACPI: DSDT (v001 TOSHIB 8000 0x19981112 MSFT 0x0100000a) @ 0x00000000 ACPI: Disabling ACPI support ACPI Exception (utmutex-0262): AE_BAD_PARAMETER, Thread C1257AA0 could not acquire Mutex [2] [20060707] ACPI Exception (utmutex-0262): AE_BAD_PARAMETER, Thread C1257AA0 could not acquire Mutex [2] [20060707] ACPI: Interpreter disabled. pnp: PnP ACPI: disabled PCI quirk: region fe00-fe3f claimed by PIIX4 ACPI Is this also blacklisted under CentOS 4, or better, would CentOS 4 be a solution for my problem? regards Olaf