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Re: radeon black screen

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  Re: radeon black screen Catherine Gramze <rhiamom@mac.com> - 2017-03-14 04:40 +0100
    Re: radeon black screen Felix Miata <mrmazda@earthlink.net> - 2017-03-14 05:40 +0100

#178809 — Re: radeon black screen

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On Mar 13, 2017, at 09:50 PM, Felix Miata <mrmazda@earthlink.net> wrote:

Catherine Gramze composed on 2017-03-13 20:56 (UTC-0400):
Probably not impossible, but difficult I cannot doubt. It ought to go into setup 
automatically regardless of video connection if you do a BIOS reset via jumper 
or battery removal. If the difficulty is lack of keyboard response at boot, you 
can probably work around it by plugging in a PS/2 keyboard.

As I mentioned in my first post, it is a display issue. The BIOS boot screen never displays, nor does any of the boot sequence, when using the Radeon R9 270X card. Forcing it into the BIOS setup won't make it display the screen it can't display without forcing it into BIOS. Hence, all setup has to be done using the integrated Intel graphics, with the switch to the PCI graphics card the final step. 


Please explain just what benefit I might derive
from installing the server video driver you mention rather than the Intel
desktop one I am using now.
What I was doing was offering a possible way to utilize your Radeon, via a 
driver which happens also to support most non-ancient Intel gfxchips.

Thank you. While I would prefer to use the Radeon card, the Intel graphics are quite sufficient, and do indeed provide me with 4K resolution. Why mess with success, e.g 4K graphics and access to the BIOS?


Will it provide me with a 4K display?
I have no idea whether your 4K display is compatible with anything in Jessie. 
Pure Jessie might be too old.
Since my Intel graphics work perfectly in Jessie, at 4K, I see no reason why the more powerful Radeon card would not. 

You haven't provided model or known modes supported of either your display or 
your CPU, or your cable connection type you're using or have tried to use, or 
what mode you actually want to use. These limit what help you might be able to 
get from any mailing list.

Please provide a reference that states my card is supported by it, as well.
Full specifications for the R9 270X seem to be a secret. I searched the web 
without finding out what specific modes it is supposed to support.

e.g. https://us.msi.com/Graphics-card/R9-270X-GAMING-2G.html#hero-specification 
suggests it ought not be the limitation, but lists no modes at all.

http://xfxforce.com/en-us/products/amd-radeon-r9-200-series/amd-radeon-r9-270x-double-dissipation-edition-r9-270x-cdfc
says maximum resolution via Dual-link DVI is 2560x1600. That's less than 4K, so 
you can't use that cable type to get 4K. With the right DisplayPort or HDMI 
cable, you should be able to get 4K, but cables don't always live up to claimed 
specifications.

I don't have your hardware, so can't guarantee anything.

I am indeed using a Displayport cable; my HDMI cables don't work at 4K. In Wheezy I had 4K using either the Radeon or the integrated graphics. In Jessie I can only use the integrated graphics. The fglrx driver is incompatible (with Gnome3 apparently, but it must be all aspects of Gnome3 as I use xfce with the gdm). As I mentioned before, blank screen. It apparently boots, but nothing ever displays, using the radeon driver. I am waiting patiently to see what Stretch brings in this area. 

You did not mention whether the driver you recommend provides 4K support, or a reference confirming it supports my card.

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#178813

Catherine Gramze composed on 2017-03-14 02:18 (UTC):

> As I mentioned in my first post, it is a display issue. The BIOS boot screen
> never displays, nor does any of the boot sequence, when using the Radeon R9
> 270X card. Forcing it into the BIOS setup won't make it display the screen
> it can't display without forcing it into BIOS. Hence, all setup has to be
> done using the integrated Intel graphics, with the switch to the PCI graphics
> card the final step
Something is defective, MSI's motherboard BIOS/firmware, Radeon's VBIOS,
hardware, display or some combination. If all acquired together, it ought to 
have been taken up with the vendors when new so that you would have had
some recourse. Maybe you still can. Do you have the latest motherboard
BIOS/firmware?
 From https://www.msi.com/Motherboard/support/Z87-G43.html#down-bios :

"2015-05-12 1.B
- Improved AMD Graphic card compatibility.
...
- Updated VBIOS and GOP Driver.
- Hide item "IGD Multi-Monitor" when "Initiate Graphic Adapter" set to IGD."

Run dmidecode to see if yours is older. 1.A is 2014-07-29. 1.9 is 2014-07-07. 
... 1.0 2013-04-02.

> In Wheezy I had 4K using either the Radeon or the integrated graphics. In
> Jessie I can only use the integrated graphics.
Now that you have shared this tidbit we know that either your hardware has gone
bad between Wheezy and Jessie, or a software regression has occurred. If the
latter, it should have been reported as a bug so that it could be fixed. The
devs don't spend much time fixing what they don't know is broken. Stretch is
just about ready to go out the door, so it's probably already too late to expect
a report to result in a fix in Debian's "next" release.
-- 
"The wise are known for their understanding, and pleasant
words are persuasive." Proverbs 16:21 (New Living Translation)

  Team OS/2 ** Reg. Linux User #211409 ** a11y rocks!

Felix Miata  ***  http://fm.no-ip.com/

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