Package: linux-2.6
Version: 2.6.36-1~experimental.1
Severity: normal
Hi, due to bug #580601, I have to use i915.powersave=0 in /etc/modprobe.d.
This worked fine from 2.6.32 to 2.6.35 with all versions I tested from
experimental. However, powersave is always 1 with 2.6.36 (which causes the
problems described in the aforementioned bug report).
Compare the output of the following commands when booted in 2.6.35:
ferna...@vostro:~$ sudo cat /sys/module/i915/parameters/powersave
0
ferna...@vostro:~$ grep i915 /etc/modprobe.d/*
/etc/modprobe.d/i915-kms.conf:options i915 modeset=1
/etc/modprobe.d/local.conf:options i915 powersave=0
ferna...@vostro:~$
To the output of the same commands when booted in 2.6.36:
ferna...@vostro:~$ uname -a
Linux vostro 2.6.36-trunk-amd64 #1 SMP Wed Oct 27 14:28:29 UTC 2010 x86_64
GNU/Linux
ferna...@vostro:~$ sudo cat /sys/module/i915/parameters/powersave
1
ferna...@vostro:~$ grep i915 /etc/modprobe.d/*
/etc/modprobe.d/i915-kms.conf:options i915 modeset=1
/etc/modprobe.d/local.conf:options i915 powersave=0
ferna...@vostro:~$
I can reproduce it every time, it's always 1 with 2.6.36.
I also have the following two options set in /etc/modprobe.d/local.conf:
options b43 pio=1
options snd-hda-intel model=dell-vostro
And those options are respected correctly (they work as they should and
/sys/modules/{b43,snd_hda_intel}/parameters show the settings I've defined),
so it looks like it's a problem with i915 only.
I've used that option with kernels 2.6.33, 34 and 35, and it has always worked
fine previously, so the bug was probably introduced in 2.6.36.
Please let me know if you need any more info.
-- Package-specific info:
** Version:
Linux version 2.6.36-trunk-amd64 (Debian 2.6.36-1~experimental.1)
(m...@stro.at) (gcc version 4.4.5 (Debian 4.4.5-5) ) #1 SMP Wed Oct 27 14:28:29
UTC 2010
** Command line:
BOOT_IMAGE=/boot/vmlinuz-2.6.36-trunk-amd64
root=UUID=745ddfbd-1368-4bcb-b307-efbe218c195a ro quiet splash
** Not tainted
** Kernel log:
[2.204430] USB Mass Storage support registered.
[2.308010] usb 2-5: new high speed USB device using ehci_hcd and address 3
[2.515208] usb 2-5: New USB device found, idVendor=064e, idProduct=8100
[2.515211] usb 2-5: New USB device strings: Mfr=2, Product=1, SerialNumber=0
[2.515214] usb 2-5: Product: Integrated_Webcam_2M
[2.515215] usb 2-5: Manufacturer: SuYin
[2.808022] ata2: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
[2.825560] ata2.00: ATAPI: TSSTcorp DVD+/-RW TS-L633C, DW40, max UDMA/100
[2.825563] ata2.00: applying bridge limits
[2.843412] ata2.00: configured for UDMA/100
[2.857791] scsi 1:0:0:0: CD-ROMTSSTcorp DVD+-RW TS-L633C DW40
PQ: 0 ANSI: 5
[3.176016] ata5: SATA link down (SStatus 0 SControl 300)
[3.204602] scsi 6:0:0:0: Direct-Access WD 1200BEV External 1.75
PQ: 0 ANSI: 4
[3.512017] ata6: SATA link down (SStatus 0 SControl 300)
[3.543564] sd 0:0:0:0: [sda] 312581808 512-byte logical blocks: (160 GB/149
GiB)
[3.543610] sd 0:0:0:0: [sda] Write Protect is off
[3.543613] sd 0:0:0:0: [sda] Mode Sense: 00 3a 00 00
[3.543632] sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled,
doesn't support DPO or FUA
[3.552618] sr0: scsi3-mmc drive: 24x/24x writer dvd-ram cd/rw xa/form2 cdda
tray
[3.552621] cdrom: Uniform CD-ROM driver Revision: 3.20
[3.552871] sr 1:0:0:0: Attached scsi CD-ROM sr0
[3.553593] sd 6:0:0:0: [sdb] 234441648 512-byte logical blocks: (120 GB/111
GiB)
[3.554088] sd 6:0:0:0: [sdb] Write Protect is off
[3.554090] sd 6:0:0:0: [sdb] Mode Sense: 23 00 00 00
[3.554092] sd 6:0:0:0: [sdb] Assuming drive cache: write through
[3.555213] sd 6:0:0:0: [sdb] Assuming drive cache: write through
[3.631910] sda: sda1 sda5 sda6 sda7
[3.632443] sd 0:0:0:0: [sda] Attached SCSI disk
[4.777467] sdb: unknown partition table
[4.778973] sd 6:0:0:0: [sdb] Assuming drive cache: write through
[4.779010] sd 6:0:0:0: [sdb] Attached SCSI disk
[4.790691] sd 0:0:0:0: Attached scsi generic sg0 type 0
[4.791083] sr 1:0:0:0: Attached scsi generic sg1 type 5
[4.791472] sd 6:0:0:0: Attached scsi generic sg2 type 0
[5.585592] PM: Starting manual resume from disk
[5.585595] PM: Resume from partition 8:7
[5.585596] PM: Checking hibernation image.
[5.585735] PM: Error -22 checking image file
[5.585736] PM: Resume from disk failed.
[5.640023] EXT3-fs: barriers not enabled
[5.652029] kjournald starting. Commit interval 5 seconds
[5.652060] EXT3-fs (sda5): mounted filesystem with ordered data mode
[7.044090] udev[409]: starting version 164
[7.463465] ACPI: acpi_idle registered with cpuidle
[7.481376] ACPI: AC Adapter [AC] (on-line)
[7.511206] pci_hotplug: PCI Hot Plug PCI Core version: 0.5
[7.523978] shpchp: Standard Hot Plug PCI Controller Driver version: 0.4
[7.578826] Monitor-Mwait will be used to enter C-1 state
[7.589194]
