[gentoo-user] fglrx and posix shared mem

[gentoo-user] fglrx and posix shared mem

[Iain Buchanan]

Hi,

for a while I've been seeing errors like this:

fglX11AllocateManagedSurface: __FGLTexMgrAllocMem failed!!

on the screen when running screensavers, specifically "mirrorblob".  I
found an ubuntu link[1] which led me to an ATI link[2] which said it is
because posix shared memory isn't enabled.

Essentially it led me to `mount | grep "shm"`

"If the mount was successful, then the following output (or similar)
should appear:

tmpfs on /dev/shm type tmpfs (rw)"

and of course, this is already enabled.  So why am I seeing the error?
Has anyone else fixed this issue?  I don't know where to go next, google
only showed 1 match!

I am running ati-drivers-8.37.6-r1

[1] http://ubuntuforums.org/showthread.php?p=1691647
[2] http://www2.ati.com/drivers/linux/linux_8.16.20.html#176878

thanks for the help,
-- 
Iain Buchanan <iaindb at netspace dot net dot au>

Good day for overcoming obstacles.  Try a steeplechase.

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[gentoo-user] Re: fglrx and posix shared mem

[Xav']

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Iain Buchanan wrote :
> Hi,
> 
> for a while I've been seeing errors like this:
> 
> fglX11AllocateManagedSurface: __FGLTexMgrAllocMem failed!!
> 
> on the screen when running screensavers, specifically "mirrorblob".  I
> found an ubuntu link[1] which led me to an ATI link[2] which said it is
> because posix shared memory isn't enabled.
> 
> Essentially it led me to `mount | grep "shm"`
> 
> "If the mount was successful, then the following output (or similar)
> should appear:
> 
> tmpfs on /dev/shm type tmpfs (rw)"
> 
> and of course, this is already enabled.  So why am I seeing the error?
You have to check if in the /dev/shm directory there is no files.
If there is ones, check their permissions and you have to be able to write on
them. If not, login as root and delete it, the issue will be normally fixed.
This is because ati drivers allocate shm but don't remove them all the time.
> Has anyone else fixed this issue?  I don't know where to go next, google
> only showed 1 match!
> 
> I am running ati-drivers-8.37.6-r1
> 
> [1] http://ubuntuforums.org/showthread.php?p=1691647
> [2] http://www2.ati.com/drivers/linux/linux_8.16.20.html#176878
> 
> thanks for the help,

Regards,
Xavier Parizet

--
http://www.linuxant.fr/


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Re: [gentoo-user] Re: fglrx and posix shared mem

[Daniel da Veiga]

On 7/17/07, Xav' <blackhawk@linuxant.fr> wrote:
> Iain Buchanan wrote :
> > Hi,
> >
> > for a while I've been seeing errors like this:
> >
> > fglX11AllocateManagedSurface: __FGLTexMgrAllocMem failed!!
> >
> > on the screen when running screensavers, specifically "mirrorblob".  I
> > found an ubuntu link[1] which led me to an ATI link[2] which said it is
> > because posix shared memory isn't enabled.
> >
> > Essentially it led me to `mount | grep "shm"`
> >
> > "If the mount was successful, then the following output (or similar)
> > should appear:
> >
> > tmpfs on /dev/shm type tmpfs (rw)"
> >
> > and of course, this is already enabled.  So why am I seeing the error?
> You have to check if in the /dev/shm directory there is no files.
> If there is ones, check their permissions and you have to be able to write on
> them. If not, login as root and delete it, the issue will be normally fixed.
> This is because ati drivers allocate shm but don't remove them all the time.
> > Has anyone else fixed this issue?  I don't know where to go next, google
> > only showed 1 match!
> >

I had this problem because the way shm was mounted, changed it from:

shm /dev/shm tmpfs defaults 0 0

to

tmpfs /dev/shm tmpfs defaults 0 0 #from gentoo ati drivers wiki

At /etc/fstab, then umounted and mounted it again, and it worked.
Don't ask me why, lol.


-- 
Daniel da Veiga
Computer Operator - RS - Brazil
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Re: [gentoo-user] Re: fglrx and posix shared mem

[Iain Buchanan]

On Tue, 2007-07-17 at 08:22 +0200, Xav' wrote:
> Iain Buchanan wrote :
> > Hi,
> > 
> > for a while I've been seeing errors like this:
> > 
> > fglX11AllocateManagedSurface: __FGLTexMgrAllocMem failed!!
[snip]
> > Essentially it led me to `mount | grep "shm"`
[snip]
> > and of course, this is already enabled.  So why am I seeing the error?

> You have to check if in the /dev/shm directory there is no files.
> If there is ones, check their permissions and you have to be able to write on
> them. If not, login as root and delete it, the issue will be normally fixed.
> This is because ati drivers allocate shm but don't remove them all the time.

hm, there was one file called ATISHM00, owned by me.  The directory is
writable by everyone:

$ ls -al /dev/shm/
total 16
drwxrwxrwt  2 root root       60 2007-07-18 08:33 .
drwxr-xr-x 16 root root    14200 2007-07-18 08:22 ..
-rw-rw-rw-  1 iain users 1048576 2007-07-18 08:33 ATISHM00

just to make sure I deleted the file and remounted the directory, but I
still get the errors...

any more ideas?  thanks,
-- 
Iain Buchanan <iaindb at netspace dot net dot au>

Brian Griffin:  Seriously, who buys a novelty fire extinguisher? 
Peter Griffin:  I'll tell you who: someone who cares enough about
physical comedy to put his entire family into serious danger, that's
who.

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Re: [gentoo-user] Re: fglrx and posix shared mem

[Iain Buchanan]

On Tue, 2007-07-17 at 14:33 -0300, Daniel da Veiga wrote:
> On 7/17/07, Xav' <blackhawk@linuxant.fr> wrote:
> > Iain Buchanan wrote :
> > > Hi,
> > >
> > > for a while I've been seeing errors like this:
> > >
> > > fglX11AllocateManagedSurface: __FGLTexMgrAllocMem failed!!

> I had this problem because the way shm was mounted, changed it from:
> 
> shm /dev/shm tmpfs defaults 0 0
> 
> to
> 
> tmpfs /dev/shm tmpfs defaults 0 0 #from gentoo ati drivers wiki
> 
> At /etc/fstab, then umounted and mounted it again, and it worked.
> Don't ask me why, lol.

thanks, I had "none", so I changed it to "tmpfs", but no change to the
error!  AFAIK this field doesn't have any effect for non-partition based
filesystems.  Perhaps it worked for you because it purged /dev/shm, and
you had some non-writable files in there (as per the other suggestion)?

thanks,
-- 
Iain Buchanan <iaindb at netspace dot net dot au>

It were not best that we should all think alike; it is difference of opinion
that makes horse-races.
		-- Mark Twain, "Pudd'nhead Wilson's Calendar"

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