Hide boot on-screen errors, or get TV-out working on ATI Radeon X300

Sun Dec 7 00:27:14 UTC 2014

On 12/6/2014 6:59 PM, John Hupp wrote:
> This started out as a quest to get rid of inelegant and troubling 
> on-screen messages appearing during boot before the Plymouth splash.  
> I have seen this on some number of PC's over time.
>
> Initially I thought that the problem was a sort of leakage of 
> ordinarily-hidden screen messages, perhaps caused by a 
> less-than-smooth handoff between bootup components.
>
> I imagined that I might find an option to hide screen messages 
> altogether, while leaving them to be recorded in the logs.
>
> Then I noted that "quiet" is already included in the default grub 
> command-line configuration.  So I wondered if "quiet" was not working.
>
> But then I found an old document at 
> https://wiki.ubuntu.com/QuietenGrub that proposes in the definition 
> for quiet:
>
>     /The messages that are not error or warning messages should be
>     hidden by default. Special care must be taken to not remove
>     messages that help identify problems in the boot sequence/.
>
> So I concluded that quiet was working as designed, and that my 
> on-screen messages must fall into the category of errors/warnings.
>
> ------------------------------------------------------------------------
>
> The messages are like, or are some subset of, these excerpts from 
> /var/log/kern.log:
>
> Dec  6 10:39:52 Dell-Lubuntu kernel: [   10.396312] dcdbas dcdbas: 
> Dell Systems Management Base Driver (version 5.6.0-3.2)
> Dec  6 10:39:52 Dell-Lubuntu kernel: [   10.435312] ivtv: Start 
> initialization, version 1.4.3
> Dec  6 10:39:52 Dell-Lubuntu kernel: [   10.435398] ivtv0: 
> Initializing card 0
> Dec  6 10:39:52 Dell-Lubuntu kernel: [   10.435405] ivtv0: Unknown 
> card: vendor/device: [4444:0016]
> Dec  6 10:39:52 Dell-Lubuntu kernel: [   10.435998] 
> ivtv0:               subsystem vendor/device: [1002:fffb]
> Dec  6 10:39:52 Dell-Lubuntu kernel: [   10.436707] 
> ivtv0:               cx23416 based
> Dec  6 10:39:52 Dell-Lubuntu kernel: [   10.437174] ivtv0: Defaulting 
> to Hauppauge WinTV PVR-150 card
> Dec  6 10:39:52 Dell-Lubuntu kernel: [   10.437777] ivtv0: Please mail 
> the vendor/device and subsystem vendor/device IDs and what kind of
> Dec  6 10:39:52 Dell-Lubuntu kernel: [   10.438710] ivtv0: card you 
> have to the ivtv-devel mailinglist (www.ivtvdriver.org)
> Dec  6 10:39:52 Dell-Lubuntu kernel: [   10.439514] ivtv0: Prefix your 
> subject line with [UNKNOWN IVTV CARD].
> Dec  6 10:39:52 Dell-Lubuntu kernel: [   10.465010] tveeprom 0-0050: 
> Huh, no eeprom present (err=-6)?
> Dec  6 10:39:52 Dell-Lubuntu kernel: [   10.465018] tveeprom 0-0050: 
> Encountered bad packet header [01]. Corrupt or not a Hauppauge eeprom.
> Dec  6 10:39:52 Dell-Lubuntu kernel: [   10.465020] ivtv0: Invalid EEPROM
>
> Dec  6 10:39:52 Dell-Lubuntu kernel: [   12.047525] wm8775 0-001b: 
> chip found @ 0x36 (ivtv i2c driver #0)
> Dec  6 10:39:52 Dell-Lubuntu kernel: [   12.050818] wm8775 0-001b: 
> I2C: cannot write 000 to register R23
> Dec  6 10:39:52 Dell-Lubuntu kernel: [   12.053958] wm8775 0-001b: 
> I2C: cannot write 000 to register R7
> Dec  6 10:39:52 Dell-Lubuntu kernel: [   12.057324] wm8775 0-001b: 
> I2C: cannot write 021 to register R11
> Dec  6 10:39:52 Dell-Lubuntu kernel: [   12.060463] wm8775 0-001b: 
> I2C: cannot write 102 to register R12
> Dec  6 10:39:52 Dell-Lubuntu kernel: [   12.063582] wm8775 0-001b: 
> I2C: cannot write 000 to register R13
> Dec  6 10:39:52 Dell-Lubuntu kernel: [   12.067825] wm8775 0-001b: 
> I2C: cannot write 1d4 to register R14
> Dec  6 10:39:52 Dell-Lubuntu kernel: [   12.070980] wm8775 0-001b: 
> I2C: cannot write 1d4 to register R15
> Dec  6 10:39:52 Dell-Lubuntu kernel: [   12.074115] wm8775 0-001b: 
> I2C: cannot write 1bf to register R16
> Dec  6 10:39:52 Dell-Lubuntu kernel: [   12.092657] wm8775 0-001b: 
> I2C: cannot write 185 to register R17
> Dec  6 10:39:52 Dell-Lubuntu kernel: [   12.099257] wm8775 0-001b: 
> I2C: cannot write 0a2 to register R18
> Dec  6 10:39:52 Dell-Lubuntu kernel: [   12.102421] wm8775 0-001b: 
> I2C: cannot write 005 to register R19
> Dec  6 10:39:52 Dell-Lubuntu kernel: [   12.105560] wm8775 0-001b: 
> I2C: cannot write 07a to register R20
> Dec  6 10:39:52 Dell-Lubuntu kernel: [   12.113635] wm8775 0-001b: 
> I2C: cannot write 102 to register R21
> Dec  6 10:39:52 Dell-Lubuntu kernel: [   12.123154] ivtv0: Registered 
> device video0 for encoder MPG (4096 kB)
> Dec  6 10:39:52 Dell-Lubuntu kernel: [   12.123311] ivtv0: Registered 
> device video32 for encoder YUV (2048 kB)
> Dec  6 10:39:52 Dell-Lubuntu kernel: [   12.123456] ivtv0: Registered 
> device vbi0 for encoder VBI (1024 kB)
> Dec  6 10:39:52 Dell-Lubuntu kernel: [   12.123594] ivtv0: Registered 
> device video24 for encoder PCM (320 kB)
> Dec  6 10:39:52 Dell-Lubuntu kernel: [   12.123725] ivtv0: Registered 
> device radio0 for encoder radio
> Dec  6 10:39:52 Dell-Lubuntu kernel: [   12.123730] ivtv0: Initialized 
> card: Hauppauge WinTV PVR-150
> Dec  6 10:39:52 Dell-Lubuntu kernel: [   12.123843] ivtv: End 
> initialization
> Dec  6 10:39:52 Dell-Lubuntu kernel: [   12.220965] ivtv-alsa: module 
> loading...
>
> My video card is an ATI Radeon X300 PCIe, running the default Radeon 
> driver.
>
> Despite the screen messages presumably being displayed because they 
> need attention, and despite looking like they are related to S-video 
> TV-out, I show lspci output includes:
>     Multimedia video controller: Internext Compression Inc iTVC16 
> (CX23416) Video Decoder (rev 01)
> And there is a kernel module loaded that is related to the same hardware.
>
> It would be nice to hook this up to a TV with S-video to see if it 
> actually works, but that would be some work for this desktop. (Maybe 
> I'll do it anyway.)
>
> The proprietary ATI fglrx driver reportedly supports TV-Out while the 
> Radeon driver commonly does not (dated info?).
>
> But instead of installing the fglrx driver to make these messages go 
> away and arrive at fully functioning hardware, I'm starting to wonder 
> if everything is installed just fine already, and if instead we have 
> grub needlessly selecting some messages to display onscreen.
>
> If that is the case, or if I don't care about TV-out here, I return to 
> the original question: Can I hide/suppress these messages, noting that 
> "quiet" is already set in the grub command line?

I should add that 'xrandr --props' reports S-video properties, so that 
further supports for me the idea that the kernel messages were 
needlessly selected for display.
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