[NV34] [NV49] terminal's visual bell is very slow with nouveau

Submitted by Harald Judt

Assigned to Nouveau Project

Link to original bug (#36090)

Description

In xterm or mlterm, the visual bell is very slow. In mlterm, you can sometimes see the lines drawing, in xterm it is not always visible. In both cases, the visual bell blocks the terminal for approximately 3 seconds. Any keyboard input during that time will still be remembered, though.

This is specific to the nouveau driver and does not occur with radeon etc.

linux-2.6.38.

lspci -vvv -s 01:00.0:
----------------------------------------------------------------------------
01:00.0 VGA compatible controller: nVidia Corporation G70 [GeForce 7800 GS] (rev a2) (prog-if 00 [VGA controller])
Subsystem: nVidia Corporation Device 037c
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 32 (1250ns min, 250ns max)
Interrupt: pin A routed to IRQ 16
Region 0: Memory at e8000000 (32-bit, non-prefetchable) [size=16M]
Region 1: Memory at d0000000 (32-bit, prefetchable) [size=256M]
Region 2: Memory at e9000000 (32-bit, non-prefetchable) [size=16M]
[virtual] Expansion ROM at ea000000 [disabled] [size=128K]
Capabilities: [60] Power Management version 2
Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
Capabilities: [44] AGP version 3.0
Status: RQ=256 Iso- ArqSz=0 Cal=3 SBA+ ITACoh- GART64- HTrans- 64bit- FW+ AGP3+ Rate=x4,x8
Command: RQ=32 ArqSz=2 Cal=0 SBA+ AGP+ GART64- 64bit- FW+ Rate=x8
Kernel driver in use: nouveau
----------------------------------------------------------------------------


nvclock -i:
----------------------------------------------------------------------------
Xlib: extension "NV-CONTROL" missing on display ":0.0".
-- General info --
Card: nVidia Geforce 7800GS
Architecture: NV49/G71 A2
PCI id: 0xf5
GPU clock: 275.000 MHz
Bustype: AGP (BR02)

-- Pipeline info --
Pixel units: 4x4 (010111b)
Vertex units: 6x1 (00111111b)
HW masked units: pixel 100011b vertex 00000000b
SW masked units: pixel 101000b vertex 11000000b

-- Memory info --
Amount: 256 MB
Type: 256 bit DDR3
Clock: 599.400 MHz

-- Sensor info --
Sensor: National Semiconductor LM99
Board temperature: 33C
GPU temperature: 46C

-- VideoBios information --
Version: 05.71.22.21.11
Signon message: GeForce 7800 GS AGP VGA BIOS
Performance level 0: gpu 275MHz/memory 600MHz/1.10V/50%
Performance level 1: gpu 375MHz/memory 600MHz/1.10V/55%
VID mask: 3
Voltage level 0: 1.05V, VID: 0
Voltage level 1: 1.10V, VID: 1
Voltage level 2: 1.20V, VID: 2