hybrid-graphics-linux team mailing list archive

[Lekensteyn <lekensteyn@xxxxxxxxx>]

Hi Bruno,


> *Fixed a bug that would cause applications which export custom allocation
> functions to our driver (such as Adobe Flash in Firefox or Chrome) to crash.
> *
>
> Maybe that would fix the issue we were linking to Chrome sandbox.
>

I don't think so, our issue is related with LD_LIBRARY_PATH being ignored
because the Chromium
sandbox is a setuid binary. Apparantly, the LD_PRELOAD variable is
preserved which causes the
error message because the VGL faker library is not loaded anymore. I've
tested it by copying
/usr/bin/printenv, chown it to root and chmod it to 2755. Tests:

$ env -i sh -c 'LD_LIBRARY_PATH=/ LD_PRELOAD=libc.so.6 printenv'
LD_LIBRARY_PATH=/
LD_PRELOAD=libc.so.6
PWD=/tmp
$ env -i sh -c 'LD_LIBRARY_PATH=/ LD_PRELOAD=libc.so.6 ./printenv'
ERROR: ld.so: object 'libc.so.6' from LD_PRELOAD cannot be preloaded:
ignored.
PWD=/tmp

This issue also occurs if the LD_LIBRARY_PATH is cleared by a wrapper
program/ script. I
propose to continue this discussion on the approperiate issues on GH.

Regards,
Lekensteyn

On Wed, Nov 23, 2011 at 10:33 PM, Bruno Pagani <bruno.n.pagani@xxxxxxxxx>wrote:

>  That doesn't mean Optimus is supported.
>
> That just means a bug when trying to load the driver on system with
> integrated graphics has been fixed.
>
> But that doesn't tell what configuration exactly: is it an nVidia
> integrated chip ? or Intel/AMD one ? And is it talking about laptop or
> desktop ? So, maybe it will fix issue #149, maybe not.
>
> But it isn't bringing Optimus support at all, because that's virtually
> impossible without changes on X side.
>
> By the way, I've seen an other important line in the changelog :
>
> *Fixed a bug that would cause applications which export custom allocation
> functions to our driver (such as Adobe Flash in Firefox or Chrome) to crash.
> *
>
> Maybe that would fix the issue we were linking to Chrome sandbox.
>
> Le 23/11/2011 13:50, Lekensteyn a écrit :
>
> I've posted an answer at http://askubuntu.com/q/82040/6969. Could this
> update have
> fixed the error from
> https://github.com/Bumblebee-Project/Bumblebee/issues/149?
> I wonder.
>
> On Wed, Nov 23, 2011 at 1:07 PM, Albert Vilella <avilella@xxxxxxxxx>wrote:
>
>> Copy+Pasting question on askubuntu.com, I would like to know if anyone
>> has looked into the
>> newest nvidia drivers and if there is any hybrid graphics benefit from
>> updating:
>>
>>
>> http://askubuntu.com/questions/82028/nvidia-amd64-driver-update-290-10-certified-impact-on-optimus-systems-and-bumb
>>
>> Before installing Bumblebee, many users with optimus enabled systems,
>> when they install the nvidia driver, this latter get on conflict with
>> the integrated graphics driver and then remains inactive. One gets a
>> black or blank screen when booting....
>>
>> yesterday, Nvidia updated their driver (nvidia-current) to version
>> 290.10 Certified that fixed many bugs and regressions for amd64
>> systems, and amongst them :
>>
>>    Fixed a bug that prevented the driver from loading on some systems
>> with integrated graphics.
>>
>> Does it mean that now even though we do not install Bumblebee, if we
>> install this update separately, we would be able to use the nvidia
>> card ? Does it mean the nvidia card would be on boot recognized by X?
>> A xinerama scenarion would be possible with an external monitor
>> through the HDMI port connected by default on many systems to the
>> nvidia card?
>>
>> Thanks for your hints or answers See:
>> http://www.nvidia.com/object/linux-display-amd64-290.10-driver.html
>>
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>
>
>
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