** Description changed: OS: kubuntu 9.04 laptop: FJS Amilo Pi 3525 cpu: Intel P7350 chipset: Intel GM45 ram: 4GB DDR2 800MHz hdd: WD Scorpio Blue 250GB lan: Realtek RTL8101E/8102E First reboot happened on time-zone choosing screen during first installation attempt. Second reboot happened on username/password choosing screen during second installation attempt. I've managed to install system from third installation attempt, but now I'm getting random reboots without any error messages: sometimes it reboots during the boot sequence, sometimes it runs for 15 or 20 minutes and reboots while it's idle. My guess it's RTL8101E/8102E related (it's using r8169 driver). Further information: http://ubuntuforums.org/showthread.php?t=1137153 + + =========================== + =========================== + + + the situation is developing, but there's still no clear answer: + http://forum.de.ts.fujitsu.com/forum/viewtopic.php?f=90&t=39045 + + citation by neolojik from that tread: + ===================================== + From my testing I found that I could reliably run a 64bit version of Linux either of these ways: + 1) Booting with mem=4096m. This unfortunately causes the loss of the final 1GB of RAM which is allocated just after the 4GB boundary. + 2) Booting with acpi=off. This disables all power saving and the ability to access thermal data, battery information and throttle the CPU. You can access all 4GB of RAM though. + 3) Booting normally, but prevent the "processor" and "thermal" modules from loading. This leaves you with a half-working ACPI interface. You can access all ACPI information except for temperature data and CPU data. CPU throttling doesn't work. + Perhaps the issue does lie with the Realtek card, I don't know and I don't have any way to try and find out. Unfortunately I believe the only way to be certain would be for Fujitsu to fix it (which seems unlikely), for someone to physically remove the device from the motherboard (voiding their warranty, and likely damaging their motherboard in the process) or to disable it via the BIOS (which isn't possible as most of the options are hidden). I have looked into editing the BIOS but the Pi 3525 doesn't actually have a BIOS in the traditional sense. + The BIOS (or rather, firmware) is called Phoenix SecureCore which is actually based on UEFI (Unified Extensible Firmware Interface). UEFI / EFI is the new generation of firmware which solves a lot of old legacy problems. Going into further details would be a bit beyond the scope of this post, but google is your friend if you want to know more. + Regardless, the Phoenix BIOS editor won't open this new type of firmware so we can't un-hide all the hidden options. Unfortunately I know of no other way to hide a device from the Linux kernel. + As I said though; I'm happy with a PAE enabled 32bit kernel. Everything seems to be working just fine and I can access the full 4GB of RAM (minus the 32MB of GFX memory of course). 64bit has no benefit for me. + Though I do hope that Fujitsu change their minds and correct the problem. + ===================================== + + so, I guess I'll have to find out is it better to run 32-bit Linux with + 4GB of RAM or 64-bit Linux with 3GB of RAM... :(
** Tags added: acpi ram -- 9.04 amd64 keeps rebooting on Amilo Pi 3525 https://bugs.launchpad.net/bugs/374616 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
