Watching fullscren flash video with Nouveau (never is fast, compared with the propietary), for once minutes and closing the video, the lags on the screen are rarely slower, and dmesg see bug kernel (compiled with frame pointer and debug_info): [11683.841984] irq 16: nobody cared (try booting with the "irqpoll" option) [11683.841990] CPU: 5 PID: 14303 Comm: plugin-containe Tainted: G O 3.10.9-gentoo #7 [11683.841991] Hardware name: System manufacturer System Product Name/M3A78-T, BIOS 2001 01/27/2011 [11683.841993] ffff88011a74d2c4 ffff88011fd43e38 ffffffff8166d461 ffff88011fd43e68 [11683.841995] ffffffff810c0e1d ffffffff8167c383 ffff88011a74d240 0000000000000010 [11683.841996] 0000000000000000 ffff88011fd43eb8 ffffffff810c129d 00000010732b9bc5 [11683.841998] Call Trace: [11683.841999] <IRQ> [<ffffffff8166d461>] dump_stack+0x19/0x1b [11683.842006] [<ffffffff810c0e1d>] __report_bad_irq+0x3d/0xe0 [11683.842009] [<ffffffff8167c383>] ? do_IRQ+0x63/0xe0 [11683.842011] [<ffffffff810c129d>] note_interrupt+0x1ad/0x200 [11683.842013] [<ffffffff810bec34>] handle_irq_event_percpu+0xb4/0x1f0 [11683.842014] [<ffffffff810bedad>] handle_irq_event+0x3d/0x60 [11683.842016] [<ffffffff810c1df9>] handle_fasteoi_irq+0x59/0xf0 [11683.842018] [<ffffffff81003ff2>] handle_irq+0x22/0x40 [11683.842019] [<ffffffff8167c37a>] do_IRQ+0x5a/0xe0 [11683.842021] [<ffffffff81672b6a>] common_interrupt+0x6a/0x6a [11683.842022] <EOI> [11683.842022] handlers: [11683.842025] [<ffffffff813a5f40>] nouveau_mc_intr [11683.842027] [<ffffffff814a2d10>] usb_hcd_irq [11683.842028] [<ffffffff814a2d10>] usb_hcd_irq [11683.842028] Disabling IRQ #16 And gdb returns: $1 = {irqreturn_t (int, void *)} 0xffffffff813a5f40 <nouveau_mc_intr> $2 = {irqreturn_t (int, void *)} 0xffffffff814a2d10 <usb_hcd_irq> Regards.
Uname: Linux mypc 3.10.9-gentoo #7 SMP Fri Sep 6 19:18:52 CEST 2013 x86_64 AMD Phenom(tm) II X6 1090T Processor AuthenticAMD GNU/Linux gcc: gcc (Gentoo 4.7.3 p1.0, pie-0.5.5) 4.7.3 Copyright (C) 2012 Free Software Foundation, Inc.
Devices with IRQ 16: 00:12.0 USB controller: Advanced Micro Devices [AMD] nee ATI SB7x0/SB8x0/SB9x0 USB OHCI0 Controller (prog-if 10 [OHCI]) Subsystem: ASUSTeK Computer Inc. Device 834e Flags: bus master, 66MHz, medium devsel, latency 32, IRQ 16 Memory at fcffe000 (32-bit, non-prefetchable) [size=4K] Kernel driver in use: ohci_hcd 00:12.1 USB controller: Advanced Micro Devices [AMD] nee ATI SB7x0 USB OHCI1 Controller (prog-if 10 [OHCI]) Subsystem: ASUSTeK Computer Inc. Device 834e Flags: bus master, 66MHz, medium devsel, latency 32, IRQ 16 Memory at fcffd000 (32-bit, non-prefetchable) [size=4K] Kernel driver in use: ohci_hcd 00:14.1 IDE interface: Advanced Micro Devices [AMD] nee ATI SB7x0/SB8x0/SB9x0 IDE Controller (prog-if 8a [Master SecP PriP]) Subsystem: ASUSTeK Computer Inc. Device 834e Flags: bus master, 66MHz, medium devsel, latency 64, IRQ 16 I/O ports at 01f0 [size=8] I/O ports at 03f4 I/O ports at 0170 [size=8] I/O ports at 0374 I/O ports at ff00 [size=16] Capabilities: [70] MSI: Enable- Count=1/1 Maskable- 64bit- Kernel driver in use: pata_atiixp 01:00.0 VGA compatible controller: NVIDIA Corporation GF119 [GeForce GT 610] (rev a1) (prog-if 00 [VGA controller]) Subsystem: ASUSTeK Computer Inc. Device 83fb Flags: bus master, fast devsel, latency 0, IRQ 16 Memory at fd000000 (32-bit, non-prefetchable) [size=16M] Memory at f0000000 (64-bit, prefetchable) [size=128M] Memory at fa000000 (64-bit, prefetchable) [size=32M] I/O ports at b800 [size=128] Expansion ROM at fea80000 [disabled] [size=512K] Capabilities: [60] Power Management version 3 Capabilities: [68] MSI: Enable- Count=1/1 Maskable- 64bit+ Capabilities: [78] Express Endpoint, MSI 00 Capabilities: [b4] Vendor Specific Information: Len=14 <?> Capabilities: [100] Virtual Channel Capabilities: [128] Power Budgeting <?> Capabilities: [600] Vendor Specific Information: ID=0001 Rev=1 Len=024 <?> Kernel driver in use: nouveau