Re: Nvidia Upgrade Agony

On 29/12/2014 4:30 pm, Stephen Collier wrote:
> On 29/12/2014 8:08 am, Larry Kennedy wrote:
>> I'm running myth 0.26.1-296 on EL6 (2.6.32-431.el6.i686) with a GT210 
>> card and the nvidia 319.32 driver.
>>
>> About a week ago, I accidentally took an update to my Xorg server 
>> (now I have xorg-x11-server-Xorg-1.15.0-25.el6.centos.i686), and 
>> after that I started getting a driver mismatch error (ABI 15 I seem 
>> to recall).  Anyway, I've seen this before, and I believe this means 
>> the nvidia 319 driver is at a lower version than is needed, so I 
>> figured all I need is an nvidia upgrade. If I remember right, the 
>> driver from atrpms was still far enough behind to cause the ABI 15 
>> error, so I tried kmod-nvidia from elrepo.  After removing the old 
>> nvidia 319 driver, this update pulled in these nvidia libraries:
>>
>> nvidia-x11-drv-340.65-1.el6.elrepo.i686
>> kmod-nvidia-340.65-1.el6.elrepo.i686
>>
>> There is no nvidia kmdl rpm installed now (as was the case before), 
>> so I am not sure if this is a problem or not.  When I start the 
>> desktop, everything seems fine, and apps like Mozilla work, but none 
>> of the myth GUIs will start.  I get a segmentation fault with both 
>> the mythfrontend and mythtv-setup. Even with --verbose, mythfrontend 
>> gives me nothing to work with.
>>
>> As a test, I also tried doing the nvidia upgrade using scrpms.  With 
>> this upgrade, I was forced to move up to 
>> kernel-2.6.32-504.3.3.el6.i686, so at least I know this update is 
>> pulling in an nvidia-kmdl, unlike kmod.  In the end, this upgrade 
>> attempt was less successful than the kmod upgrade in that the nvidia 
>> driver is never able to load, so the desktop never starts. At the 
>> bottom of Xorg.0.log it shows this:
>>
>> [    20.723] (II) LoadModule: "nvidia"
>> [    20.723] (WW) Warning, couldn't open module nvidia
>> [    20.723] (II) UnloadModule: "nvidia"
>> [    20.723] (II) Unloading nvidia
>> [    20.723] (EE) Failed to load module "nvidia" (module does not 
>> exist, 0)
>> [    20.723] (EE) No drivers available.
>> [    20.723] (EE) Fatal server error:
>> [    20.723] (EE) no screens found(EE)
>> [    20.723] (EE) Please consult the CentOS support at 
>> http://wiki.centos.org/Documentation
>>
>> This seems odd since "modprobe nvidia" succeeds.  I tried 
>> nvidia-xconfig to recreate the xorg.conf, but no go. Of course I am 
>> rebooting every time to get a clean start.  After many attempts, it 
>> looks like kmod-nvidia 340.65 may be my best option.
>>
>> Is anyone aware of an issue with mythtv 0.26 and the nvidia 340.xx 
>> driver?  Alternatively, if anyone has ideas on how to get the scrpms 
>> nvidia driver to work, I am open to trying that again too.
>>
>> I have options, but nothing looks good.  Downgrading Xorg seems 
>> problematic, so I didn't go there. I suppose I could upgrade myth to 
>> version 0.27 and see what happens, but that presents some difficulty 
>> on EL6 (although I know that scrpms has compiled both myth 0.27 and 
>> the compatible version of Qt). It also triggers multiple myth 
>> upgrades for BE-FE compatibility. Another option is to go to EL7, but 
>> that requires a decent effort too since there is no good 
>> upgrade-in-place from EL6 32-bit to EL7).
>>
>> I apologize in advance if this post is somewhat schizophrenic.  I can 
>> provide more details if anyone can lend a hand.
>>
>> Larry
>>
> I'm sorry for the delay - I'll have a look and do some testing with my 
> el6 frontend I also upgraded a from el6 32bit to 64 as a path to el7 
> If you want I'll send you the process.
>
> Cheers
> Stephen
>
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I've found the problem and fixed it. The src rpms are built - the 
updated nvidia drivers will build over the next hour or so.

Cheers
Stephen