OT: greenish area in new monitor

[Mike Marchywka]

On Wed, May 01, 2019 at 06:56:51PM +0200, M. Fioretti wrote:
> Hello all,
> 
> (I am asking here also to have "language support", because I have no
> idea which kind of keywords I should put in search engines to get
> results relevant to the issue below...)
> 
> I am running Ubuntu 16.04LTS on a box with on-board graphic controller
> (output of lspci is below).
> 
> Yesterday my monitor broke. Being in a hurry to finish a deadline, I
> borrowed from a friend an unused HP 23bw ISP monitor, which as far as
> he remembers had no problem whatsoever.

How do you know your monitor broke and not the computer? 
If this was sitting around for a while you could suspect dust
and humidity/condensation or corrosion- in the past I've used a leaf blower
successfully, no joke. IIRC I had a CRT that just had to warm up
and presumably dry out. 
> 
> I plugged connected this monitor to the computer with the HDMI cable,
> and found a problem.  Considering the screen divided in three vertical

How was your old monitor connected, same graphics card and connector?

> stripes of the same size, the rightmost one is OK, ie a terminal with
> white background IS white. In the leftmost stripe, the same terminal
> has a faint greenish tone, and instead of being one color, looks like
> ruled paper, with VERY, very thin and very close horizontal lines. The
> middle stripe is a "transition" area, ie you see the terminal
> background change as above gradually, as you move it from right to
> left. Text in terminals or browser/libreoffice windows is very sharp.
> 
> My questions:
> 
> 1) is this surely a hardware problem that, for whatever reason
> happened just now, and if so which one? If not, is it something that
> can be corrected by monitor settings or from Ubuntu?
> 
> 2) if it *is* a hardware problem, any idea if it will get worst by
> *continuing* to use* the monitor? I could live with this problem for a
> week or two, before shopping for a new monitor, or borrowing another
> one (I really hate to see working hardware unused, regardless of
> money...)
> 
> any comment and suggestion is very welcome!
> 
> 
> #> lspci | grep ' VGA ' | cut -d" " -f 1 | xargs -i lspci -v -s {}
> 01:05.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] RS780L [Radeon 3000] (prog-if 00 [VGA controller])
> Subsystem: Micro-Star International Co., Ltd. [MSI] RS780L [Radeon 3000]
> Flags: bus master, fast devsel, latency 0, IRQ 18
> Memory at d0000000 (32-bit, prefetchable) [size=256M]
> I/O ports at d000 [size=256]
> Memory at febe0000 (32-bit, non-prefetchable) [size=64K]
> Memory at fea00000 (32-bit, non-prefetchable) [size=1M]
> [virtual] Expansion ROM at 000c0000 [disabled] [size=128K]
> Capabilities: <access denied>
> Kernel driver in use: radeon
> Kernel modules: radeon
> 
> --
> 
> M. Fioretti http://mfioretti.com                   http://stop.zona-m.net
> 
> Your own civil rights and the quality of your life heavily depend on how
> software is used *around* you
> 
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