I suffer the same problems of other pavilion Turion64 X2 users: system can be
started only with noapic option (sometimes it can boot without it, but only if
I use the NVIDIA proprietary drivers: in that case is very unstable, expecially
during the boot and the shutdown).
Using the noapic boot option USB does not work well: only peripherals already
connected before Ubuntu is booted do their works, all the others, if plugged
when Ubuntu is running, are simply and completely ignored. For example: if i
plug an USB memory key when the computer is running, that is completely ignored
and is impossible to mount it. If i plug it when the computer is switched off,
and then I boot, Ubuntu is able to mount it. But even in that case, if i umount
the key and unplug it, then there will be no way to remount it when re-plugged.
The same occurs with USB mouses: if i plug it when Ubuntu is already booted,
the mouse is ignored. Only a peripheral already connected before the boot is
recognized and configurated.
here is my "cat /proc/interrupts" :
CPU0 CPU1
0: 380780 12695 XT-PIC-XT timer
1: 5418 186 XT-PIC-XT i8042
2: 0 0 XT-PIC-XT cascade
5: 75173 3535 XT-PIC-XT sata_nv
7: 34838 955961 XT-PIC-XT ehci_hcd:usb1
8: 4 3 XT-PIC-XT rtc
9: 1888 238 XT-PIC-XT acpi, HDA Intel
10: 180282 7640 XT-PIC-XT bcm43xx, eth2
11: 299800 10441 XT-PIC-XT ohci_hcd:usb2, ohci1394,
sdhci:slot0
12: 70 53 XT-PIC-XT i8042
14: 13316 585 XT-PIC-XT ide0
NMI: 0 0
LOC: 12678 380637
ERR: 891921 <---------------------STRANGE....
MIS: 0
>From my dmesg:
....
[ 0.632000] PCI: BIOS BUG #81[49435000] found
.....
[ 129.776000] irq 7: nobody cared (try booting with the "irqpoll" option)
[ 129.776000] [<c015b594>] __report_bad_irq+0x24/0x80
[ 129.776000] [<c013972e>] __rcu_process_callbacks+0x11e/0x1d0
[ 129.776000] [<c015b852>] note_interrupt+0x262/0x2a0
[ 129.776000] [<f88f96c2>] usb_hcd_irq+0x22/0x60 [usbcore]
[ 129.776000] [<c015aab0>] handle_IRQ_event+0x30/0x60
[ 129.776000] [<c015c46b>] handle_level_irq+0xdb/0x110
[ 129.776000] [<c0106b1b>] do_IRQ+0x3b/0x70
[ 129.776000] [<c0118735>] smp_apic_timer_interrupt+0x55/0x80
[ 129.776000] [<f884f74b>] acpi_processor_idle+0x0/0x425 [processor]
[ 129.776000] [<c0105223>] common_interrupt+0x23/0x30
[ 129.776000] [<f884f74b>] acpi_processor_idle+0x0/0x425 [processor]
[ 129.776000] [<c011dba2>] native_safe_halt+0x2/0x10
[ 129.776000] [<f884f6d1>] acpi_safe_halt+0x1c/0x29 [processor]
[ 129.776000] [<f884f8dd>] acpi_processor_idle+0x192/0x425 [processor]
[ 129.776000] [<f884f74b>] acpi_processor_idle+0x0/0x425 [processor]
[ 129.776000] [<c0102413>] cpu_idle+0x53/0xe0
[ 129.776000] =======================
[ 129.776000] handlers:
[ 129.776000] [<f88f96a0>] (usb_hcd_irq+0x0/0x60 [usbcore])
[ 129.776000] Disabling IRQ #7
[ 131.000000] Clocksource tsc unstable (delta = -172025479 ns)
....
--
HP Pavilion dv6103eu laptop - all Ubuntu versions gets frozen during X startup
until I specify "noapic" boot option
https://bugs.launchpad.net/bugs/89746
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