hybrid-graphics-linux team mailing list archive

[Joaquín Ignacio Aramendía <samsagax@xxxxxxxxx>]

>VGA-switcheroo is enabled but echo OFF says Permission denied (even
with sudo).
> 
> $ cat /sys/kernel/debug/vgaswitcheroo/switch
> 0:+:Pwr:0000:00:02.0
> 1: :Pwr:0000:01:00.0

Try:
$ su - (enter password)
$ echo OFF /sys/kernel/debug/vgaswitcheroo/switch

The su command is in a way "stronger" than sudo.

-- 
Joaquín Ignacio Aramendía <samsagax@xxxxxxxxx>

El jue, 28-07-2011 a las 07:30 -0800, Leonardo Morelli escribió:
> Well, after updating bumblebee my system reached the "leave me alone please!" state, so I uninstalled bumblebee, nvidia-current, etc.
> One of the main issues was that it was trying to boot with the nouveau driver, apparently, and the following message appears:
> 
> [drm] nouveau 0000:01:00.0: LVDS present in DCB table, but couldn't determine its native mode. Disabling.
> 
> After that I saw some scary messages such as "soft lockup on cpu#2 for 61s!", the system got unusable.
> 
> Luckily, I was able to enter in recovery mode, and managed to reinstall libgl1-mesa-dri & -glx, uninstall bumblebee and (fingers-crossed) it is working as usual, except for turning off the nvidia card, it doesn't work now:
> 
> insmod: error inserting 'acpi_call.ko': -1 Invalid module format
> 
> but at least I can use my notebook. VGA-switcheroo is enabled but echo OFF says Permission denied (even with sudo).
> 
> $ cat /sys/kernel/debug/vgaswitcheroo/switch
> 0:+:Pwr:0000:00:02.0
> 1: :Pwr:0000:01:00.0
> 
> 
> > -----Original Message-----
> > From: samsagax@xxxxxxxxx
> > Sent: Sat, 16 Jul 2011 17:48:18 -0300
> > To: leonrm@xxxxxxxxx
> > Subject: Re: [Hybrid-graphics-linux] Bumblebee test on PCI ID: 10de:0a75
> > 
> > Vga switcheroo reports that can handle the card. The problem is a
> > conflict with the method called to turn off the card at system startup.
> > 
> > Try to disable the bumblebee "turnoff on startup" script, it seems that
> > it's not turning off the card correctly, that's why you see this kind of
> > message:
> >  FATAL: Error inserting nvidia_current
> > (/lib/modules/2.6.35-30-generic/updates/dkms/nvidia-current.ko): No such
> > device
> > 
> > Vga-switcheroo will work when the card is on and usable (nouveau driver
> > loaded).
> > The workaround to use vga-switcheroo is to unload the nvidia driver,
> > load the nouveau driver, call OFF on vga-switcheroo. To turn the card on
> > the process is exactly tho opposite: call ON on vga-switcheroo, unload
> > the nouveau module, load the nvidia module.
> > 
> > --
> > Joaquín Ignacio Aramendía <samsagax@xxxxxxxxx>
> > 
> > El sáb, 16-07-2011 a las 12:16 -0800, Leonardo Morelli escribió:
> >> Under kubuntu 10.10 I tried the following:
> >> 
> >> $ sudo service bumblebee stop
> >>  * Starting Bumblebee X server bumblebee
> >> _PS0 Enabling nVidia Card Succeded.
> >> FATAL: Error inserting nvidia_current
> >> (/lib/modules/2.6.35-30-generic/updates/dkms/nvidia-current.ko): No such
> >> device
> >>                [ OK ]
> >> $ sudo rmmod nvidia-current
> >> ERROR: Module nvidia_current does not exist in /proc/modules
> >> $ sudo modprobe -v nouveau
> >> insmod
> >> /lib/modules/2.6.35-30-generic/kernel/drivers/gpu/drm/nouveau/nouveau.ko
> >> $ dmesg | grep -i vga
> >> [26295.530661] VGA switcheroo: detected DSM switching method
> >> \_SB_.PCI0.P0P1.PEGP handle
> >> 
> >> the "vgaswitcheroo: enabled" doesn't show up and neither the file
> >> /sys/.../vgaswitcheroo*.
> >> 
> >> 
> >> 
> >>> -----Original Message-----
> >>> From: samsagax@xxxxxxxxx
> >>> Sent: Sat, 16 Jul 2011 15:39:52 -0300
> >>> To: leonrm@xxxxxxxxx
> >>> Subject: Re: [Hybrid-graphics-linux] Bumblebee test on PCI ID:
> >>> 10de:0a75
> >>> 
> >>> Once you mount the debugfs, the /sys/vgaswitcheroo/switch file will
> >>> appear when you load the nouveau driver (the vga-switcheroo module will
> >>> enable then, detect the DSM method and will handle acpi events from the
> >>> nvidia card).
> >>> Try this:
> >>> https://wiki.archlinux.org/index.php/Bumblebee#Power_Switching_Using_Vga-switcheroo
> >>> 
> >>> --
> >>> Joaquín Ignacio Aramendía <samsagax@xxxxxxxxx>
> >>> 
> >>> El sáb, 16-07-2011 a las 07:34 -0800, Leonardo Morelli escribió:
> >>>> Tried mounting but mtab says it is already mounted, in fact, I can see
> >>>> many directories under /sys/kernel/debug except for vgaswitcheroo...
> >>>> 
> >>>> 
> >>>>> -----Original Message-----
> >>>>> From: samsagax@xxxxxxxxx
> >>>>> Sent: Sat, 16 Jul 2011 00:56:16 -0300
> >>>>> To: hybrid-graphics-linux@xxxxxxxxxxxxxxxxxxx
> >>>>> Subject: Re: [Hybrid-graphics-linux] Bumblebee test on PCI ID:
> >>>>> 10de:0a75
> >>>>> 
> >>>>> You must mount the debugfs filesystem:
> >>>>> # mount -t debugfs none /sys/kernel/debug/
> >>>>> 
> >>>>> To mount no every boot, add this line to the file "/etc/fstab":
> >>>>> none /sys/kernel/debug debugfs defaults 0 0
> >>>>> 
> >>>>> --
> >>>>> Joaquín Ignacio Aramendía <samsagax@xxxxxxxxx>
> >>>>> 
> >>>>> El vie, 15-07-2011 a las 19:24 -0800, Leonardo Morelli escribió:
> >>>>>> After reading https://help.ubuntu.com/community/HybridGraphics,
> >>>>>> the vga_switcheroo thing is enabled:
> >>>>>> 
> >>>>>> $ grep -i switcheroo /boot/config-2.6.35...
> >>>>>> CONFIG_VGA_SWITCHEROO=y
> >>>>>> 
> >>>>>> but the file /sys/kernel/debug/vgaswitcheroo/switch doesn't exist,
> >>>>>> nor
> >>>>>> even the dir vgaswitcheroo...
> >>>>>> (I'm running Kubuntu 10.10)
> >>>>>> 
> >>>>>> Do I need to do something else to make it appear?
> >>>>>> 
> >>>>>> 
> >>>>>>> -----Original Message-----
> >>>>>>> From: samsagax@xxxxxxxxx
> >>>>>>> Sent: Fri, 15 Jul 2011 23:40:51 -0300
> >>>>>>> To: leonrm@xxxxxxxxx
> >>>>>>> Subject: Re: [Hybrid-graphics-linux] Bumblebee test on PCI ID:
> >>>>>>> 10de:0a75
> >>>>>>> 
> >>>>>>> This "error" is spreading. Is related to the methods called to turn
> >>>>>>> on/off the card and the kernel being able to recognize the card
> >>>>>>> again
> >>>>>>> once turned on. This means that either the card was not properly
> >>>>>>> shut
> >>>>>>> down/turned on, or the kernel does not recognize it properly. Try
> >>>>>>> the
> >>>>>>> vga-switcheroo switch, it is known to work on some machines with
> >>>>>>> that
> >>>>>>> problem.
> >>>>>>> --
> >>>>>>> Joaquín Ignacio Aramendía <samsagax@xxxxxxxxx>
> >>>>>>> 
> >>>>>>> El vie, 15-07-2011 a las 11:48 -0800, Leonardo Morelli escribió:
> >>>>>>>> Well, after installing Bumblebee and running optirun glxgears, I
> >>>>>>>> got
> >>>>>>>> the
> >>>>>>>> "FATAL: Error inserting nvidia_current" :s
> >>>>>>>> The acpi calls (on and off) are working.
> >>>>>>>> 
> >>>>>>>> The thing is that after checking the /var/log/messages it says:
> >>>>>>>> 
> >>>>>>>> NVRM: The NVIDIA GPU 0000:01:00.0 (PCI ID: 10de:0a75) installed in
> >>>>>>>> this
> >>>>>>>> system is not supported by the 275.09.07 NVIDIA Linux graphics
> >>>>>>>> driver
> >>>>>>>> release.
> >>>>>>>> 
> >>>>>>>> but...
> >>>>>>>> 
> >>>>>>>> when I see the /usr/share/doc/nvidia-current/README.txt.gz, this
> >>>>>>>> line
> >>>>>>>> appears at the APPENDIX A:
> >>>>>>>> GeForce 310M    0x0A75    C
> >>>>>>>> 
> >>>>>>>> so, apparently, ID 0x0a75 is supported...
> >>>>>>>> 
> >>>>>>>> Should I file a bug report?
> >>>>>>>> 
> >>>>>>>> 
> >>>>>>>> Leo
> >>>>>>>> 
> >>>> 
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