[mythtv-users] Video output size changed

[Jim]

On 1/15/2018 9:15 AM, Mike Bibbings wrote:
> On 15/01/18 13:48, Jim wrote:
>> I rebooted my BE/FE Saturday and when it came back up the picture was 
>> no longer full screen. It's not quite letterboxed, it's somewhere 
>> between full screen and letterboxed. It's got about a 2" black band 
>> across the top and bottom and about a 1" band down both sides. It's 
>> connected via HDMI to a 44" Samsung, as it has been for a couple of 
>> years.
>> I don't think it's a myth issue as the toolbar on the desktop is the 
>> same way. It stops about an inch from the screen edges. It seems to 
>> not know the tv/screen size anymore.
>> Ignoring the fact that it is not using the full screen the aspect 
>> ratio is wrong, things are now squished top to bottom.
>>
>> I don't understand what could have changed. This has been working 
>> fine since I updated to v29 on Jan 1st. And on v0.28 for several 
>> months before that. I have not made any changes. I did try rebooting 
>> several times and now it is always coming back up like this.
>>
>> Here is version info fixes/29 [v29.0-71-g339b08e]
>>
>> Here is a frontend log
>> https://pastebin.com/ZRX5FJzN
>> There is a lot about waiting for video buffers and VDPAU errors.
>>
>> and here is a backend log
>> https://pastebin.com/PXyyUKZ1
>> This log shows some errors about not being able to find channel 4_1. 
>> I know that issue and I'll fix that.
>>
>> This pc has an NVIDIA card in it and I'm wondering if the driver has 
>> gotten corrupted. Not sure what to do about that.
>>
>> Any suggestions?
>>
> What is the NVIDIA card and what is your linux kernel version ?
>
> I recently had a problem on Xubuntu 16.04 LTS with an older NVIDIA 
> (Geforce 210) card  caused by the the latest update 
> (Meltdown/Spectre)  to  kernel 4.13.0-26-generic #29~16.04.2-Ubuntu 
> SMP Tue Jan 9 22:00:44 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux
>  which tries to install  NVIDIA driver 384.111, the NVIDIA install 
> crashes.  Previously I was using NVIDIA 340 driver.
>
> Mike
>
That could be the problem. It is 16.04 (updated sometime in Dec) and it 
is an older system going on 9  years old now.
The video card is ASUS GeForce 8400 GS DirectX 10 EN8400GS 
SILENT/HTP/512M 512MB 64-Bit GDDR2 PCI Express x16 HDCP Ready
https://www.newegg.com/Product/Product.aspx?Item=N82E16814121235
This is from dmesg - Linux version 4.13.0-26-generic 
(buildd at lgw01-amd64-031) (gcc version 5.4.0 20160609 (Ubuntu 
5.4.0-6ubuntu1~16.04.5)) #29~16.04.2-Ubuntu SMP Tue Jan 9 22:00:44 UTC 
2018 (Ubuntu 4.13.0-26.29~16.04.2-generic 4.13.13)

How can I tell what driver it used to use and what driver it is using now?

-- 
Jim