12.04 update breaks video
petter at synth.no
Sun May 3 07:08:15 UTC 2015
On Sat, 2 May 2015 10:14:41 -0700
rikona <rikona at sonic.net> wrote:
> On Sat, 2 May 2015 09:55:02 +0200
> Petter Adsen <petter at synth.no> wrote:
> > On Fri, 1 May 2015 12:44:15 -0700
> > rikona <rikona at sonic.net> wrote:
> > > On Fri, 1 May 2015 14:02:40 +0200
> > > Liam Proven <lproven at gmail.com> wrote:
> > > > What graphics card? What driver for it?
> > >
> > > AMD A4-5300 APU with Radeon(tm) HD Graphics × 2
> > >
> > > driver: ESA: DVST
> > >
> > > FGLRX 3D-accelerated proprietary graphics driver for ATI cards.
> > > --- activated but not currently in use
> > What does this last line mean?
> The last 2 lines were from looking at "additional drivers" for the
> system. It seems to say FGLRX is not being used.
It was certainly not a clear way of describing the situation. That
should be changed in some way.
> > What does your /var/log/Xorg.0.log say
> > about your driver? There will be two lines like this:
> > [104101.617] (II) LoadModule: "radeon"
> > [104101.617] (II)
> > Loading /usr/lib/xorg/modules/drivers/radeon_drv.so
> > Except that yours might say "fglrx" instead of "radeon".
> I've got:
> [ 19.315] (II) LoadModule: "radeon"
> [ 19.315] (II) Loading /usr/lib/xorg/modules/drivers/radeon_drv.so
> + many other radeon lines
> also have:
> [ 19.290] (II) LoadModule: "fglrx"
> [ 19.290] (II)
> Loading /usr/lib/x86_64-linux-gnu/xorg/extra-modules/modules/drivers/fglrx_drv.so
> [ 19.315] (II) LoadModule: "vesa"
> [ 19.316] (II) Loading /usr/lib/xorg/modules/drivers/vesa_drv.so
> which, from "driver" seems to be what is being used
> How do I tell which is REALLY being used?
Yes, those are normal. It is X probing for present drivers. After the
probin, I get this:
[104101.618] (II) RADEON: Driver for ATI Radeon chipsets:
ATI Radeon Mobility X600 (M24) 3150 (PCIE), ATI FireMV 2400
(PCI), ATI Radeon Mobility X300 (M24) 3152 (PCIE),
...and so on. Then a little more stuff, and:
[104101.622] (II) RADEON(0): Creating default Display subsection in
Screen sect$ "Default Screen Section" for depth/fbbpp
[104101.622] (==) RADEON(0): Depth 24, (--) framebuffer bpp 32
[104101.622] (II) RADEON(0): Pixel depth = 24 bits stored in 4 bytes (32 bpp pi$
[104101.622] (==) RADEON(0): Default visual is TrueColor
[104101.622] (==) RADEON(0): RGB weight 888 [104101.622]
(II) RADEON(0): Using 8 bits per RGB (8 bit DAC)
The "RADEON" in capitals designates the driver. In your case this
should be "FGLRX", I believe.
> > You can also check your "lsmod" output to see which module is
> > loaded.
> Gives me:
> vesafb 13846 1
> fglrx 8080630 1564
> amd_iommu_v2 19228 1 fglrx
You are using fglrx. Good to know :)
> Thanks for the info re how to look deeper into the system - that's
> what I was hoping to find out. But, I don't yet know how to interpret
> it correctly - still don't know which driver is REALLY being used.
You do now :)
> And, more importantly, why the black screen with any video?
I could hazard a guess, but it's not anything more than that - just a
guess. If I were you, I would switch from fglrx to radeon. 99.999% of
the problems I have had with my system in recent years were due to the
fglrx driver, switching to radeon did wonders for my system stability.
If you do not _need_ the fglrx driver for something, like if you have a
really new card that isn't supported by radeon, I would at least give
it a try.
> Looks like somebody is trying to force me to upgrade to 14.04. :-)))
> [which I plan to do, but a bit later...]
Shouldn't be necessary. If you are happy with 12.04 I see no reason to
upgrade as long as you are getting security updates. :)
Best of luck!
"Are you sure?"
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