Comment 94 for bug 882710

Hi, I have same problem using Nvidia Go 7300 with latest drivers in precise. Relevant part of dmesg output follows:

[ 435.908958] NVRM: os_pci_init_handle: invalid context!
[ 435.908969] NVRM: os_pci_init_handle: invalid context!
[ 435.908988] NVRM: os_map_kernel_space: can't map 0xc0000000, invalid context!
[ 435.909017] NVRM: GPU at 0000:01:00.0 has fallen off the bus.
[ 435.909031] NVRM: os_pci_init_handle: invalid context!
[ 435.909036] NVRM: os_pci_init_handle: invalid context!
[ 435.909045] NVRM: os_map_kernel_space: can't map 0xc0000000, invalid context!
[ 436.944057] irq 16: nobody cared (try booting with the "irqpoll" option)
[ 436.944065] Pid: 1241, comm: Xorg Tainted: P C O 3.2.0-23-generic #36-Ubuntu
[ 436.944068] Call Trace:
[ 436.944077] [<c1561d5f>] ? printk+0x2d/0x2f
[ 436.944083] [<c10b1289>] __report_bad_irq+0x29/0xd0
[ 436.944087] [<c107ad84>] ? tick_handle_oneshot_broadcast+0xf4/0x100
[ 436.944091] [<c10b14e4>] note_interrupt+0x104/0x150
[ 436.944095] [<c10af3ae>] handle_irq_event_percpu+0x9e/0x200
[ 436.944100] [<c1027378>] ? default_spin_lock_flags+0x8/0x10
[ 436.944104] [<c1576d2d>] ? _raw_spin_lock_irqsave+0x2d/0x40
[ 436.944107] [<c10af54b>] handle_irq_event+0x3b/0x60
[ 436.944111] [<c10b1cf0>] ? unmask_irq+0x30/0x30
[ 436.944115] [<c10b1d3e>] handle_fasteoi_irq+0x4e/0xd0
[ 436.944117] <IRQ> [<c157e432>] ? do_IRQ+0x42/0xc0
[ 436.944124] [<c10b5c0d>] ? rcu_irq_exit+0xd/0x10
[ 436.944128] [<c105218c>] ? irq_exit+0x3c/0xa0
[ 436.944132] [<c157e509>] ? smp_apic_timer_interrupt+0x59/0x88
[ 436.944135] [<c157e370>] ? common_interrupt+0x30/0x38
[ 436.944139] [<c1459caf>] ? acpi_pm_read+0xf/0x20
[ 436.944144] [<c1074204>] ? getnstimeofday+0x54/0x120
[ 436.944148] [<c1074316>] ? do_gettimeofday+0x16/0x40
[ 436.944152] [<c10508e3>] ? sys_gettimeofday+0x23/0x70
[ 436.944156] [<c1576ed4>] ? syscall_call+0x7/0xb
[ 436.944158] handlers:
[ 436.944336] [<f9b4b050>] nv_kern_isr
[ 436.944338] Disabling IRQ #16