Problem for me too on both my Ubuntu 9.04 workstation (with all Intel chipset) and my Ubuntu 8.04.2 Server (SiS chipset) from which the output below is shown:
~$ sudo hwclock --debug hwclock from util-linux-ng 2.13.1 hwclock: Open of /dev/rtc failed, errno=16: Device or resource busy. No usable clock interface found. Cannot access the Hardware Clock via any known method. ~$ uname -a Linux server 2.6.24-24-server #1 SMP Wed Apr 15 16:36:01 UTC 2009 i686 GNU/Linux ~$ lspci 00:00.0 Host bridge: Silicon Integrated Systems [SiS] 661FX/M661FX/M661MX Host (rev 11) 00:01.0 PCI bridge: Silicon Integrated Systems [SiS] SiS AGP Port (virtual PCI-to-PCI bridge) 00:02.0 ISA bridge: Silicon Integrated Systems [SiS] SiS964 [MuTIOL Media IO] (rev 36) 00:02.7 Multimedia audio controller: Silicon Integrated Systems [SiS] AC'97 Sound Controller (rev a0) 00:03.0 USB Controller: Silicon Integrated Systems [SiS] USB 1.1 Controller (rev 0f) 00:03.1 USB Controller: Silicon Integrated Systems [SiS] USB 1.1 Controller (rev 0f) 00:03.2 USB Controller: Silicon Integrated Systems [SiS] USB 1.1 Controller (rev 0f) 00:03.3 USB Controller: Silicon Integrated Systems [SiS] USB 2.0 Controller 00:05.0 IDE interface: Silicon Integrated Systems [SiS] RAID bus controller 180 SATA/PATA [SiS] (rev 01) 00:09.0 Ethernet controller: Intel Corporation 82541GI Gigabit Ethernet Controller 00:0b.0 Multimedia video controller: Brooktree Corporation Bt878 Video Capture (rev 11) 00:0b.1 Multimedia controller: Brooktree Corporation Bt878 Audio Capture (rev 11) 01:00.0 VGA compatible controller: Silicon Integrated Systems [SiS] 661/741/760 PCI/AGP or 662/761Gx PCIE VGA Display Adapter -- hwclock /dev/rtc Device or resource busy https://bugs.launchpad.net/bugs/325518 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs