Bug 16304

Summary: i915 - high number of wakeups
Product: Drivers Reporter: Enrico Bandiello (enban)
Component: Video(DRI - Intel)Assignee: drivers_video-dri-intel (drivers_video-dri-intel)
Status: CLOSED DUPLICATE    
Severity: low CC: enban, maciej.rutecki, rjw
Priority: P1    
Hardware: x86-64   
OS: Linux   
Kernel Version: 2.6.35-rc3 Tree: Mainline
Regression: Yes
Bug Depends on:    
Bug Blocks: 16055    

Description Enrico Bandiello 2010-06-27 09:52:14 UTC
Hi,
while testing kernel 2.6.35-rc3 I noticed that maybe there's
a small regression: the module "i915" shows an high number of wakeups in
powertop (60-72) on an otherwise idle laptop. This is not happening on
kernel 2.6.34 that's working fine (few or no i915 wakeups when idle ).

I'm using a Toshiba Satellite L300 and my distro is a Debian
testing/unstable mix.

lspci output:

00:00.0 Host bridge: Intel Corporation Mobile 4 Series Chipset Memory 
Controller Hub (rev 07)
00:02.0 VGA compatible controller: Intel Corporation Mobile 4 Series 
Chipset Integrated Graphics Controller (rev 07)
00:02.1 Display controller: Intel Corporation Mobile 4 Series Chipset 
Integrated Graphics Controller (rev 07)
00:1a.0 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI 
Controller #4 (rev 03)
00:1a.1 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI 
Controller #5 (rev 03)
00:1a.7 USB Controller: Intel Corporation 82801I (ICH9 Family) USB2 EHCI 
Controller #2 (rev 03)
00:1b.0 Audio device: Intel Corporation 82801I (ICH9 Family) HD Audio 
Controller (rev 03)
00:1c.0 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express 
Port 1 (rev 03)
00:1c.1 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express 
Port 2 (rev 03)
00:1c.4 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express 
Port 5 (rev 03)
00:1d.0 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI 
Controller #1 (rev 03)
00:1d.1 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI 
Controller #2 (rev 03)
00:1d.2 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI 
Controller #3 (rev 03)
00:1d.3 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI 
Controller #6 (rev 03)
00:1d.7 USB Controller: Intel Corporation 82801I (ICH9 Family) USB2 EHCI 
Controller #1 (rev 03)
00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev 93)
00:1f.0 ISA bridge: Intel Corporation ICH9M LPC Interface Controller 
(rev 03)
00:1f.2 SATA controller: Intel Corporation ICH9M/M-E SATA AHCI 
Controller (rev 03)
00:1f.3 SMBus: Intel Corporation 82801I (ICH9 Family) SMBus Controller 
(rev 03)
03:00.0 Ethernet controller: Atheros Communications Inc. AR5001 Wireless 
Network Adapter (rev 01)

This is the first time I write here, so please forgive me if there're
errors in this bug report and feel free to contact me if you need 
more infos.

Thank you very much, have a nice day.
Comment 1 Rafael J. Wysocki 2010-07-09 21:22:09 UTC

*** This bug has been marked as a duplicate of bug 16307 ***