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From: "Christian König" <ckoenig.leichtzumerken@gmail.com>
To: "Alberto Salvia Novella" <es20490446e@gmail.com>,
	"Christian König" <christian.koenig@amd.com>
Cc: alexander.deucher@amd.com, benh@kernel.crashing.org,
	linux-fbdev@vger.kernel.org, amd-gfx@lists.freedesktop.org
Subject: Re: Interlaced resolutions hang the desktop
Date: Tue, 30 Mar 2021 15:41:31 +0200	[thread overview]
Message-ID: <909002f5-691c-1cbb-1e44-a99217be8791@gmail.com> (raw)
In-Reply-To: <CAHJvkbuu5WB=QTu0EUgSGcoK6KMbP2j8NA0o+XTdtkwadNpsxg@mail.gmail.com>


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Mhm, no idea why an interlaced resolution would cause a crash. Maybe 
some miscalculation in the display code.

But apart from that if you just connected your PC to a TV I also 
wouldn't recommend using an interlaced resolution in the first place.

See those resolutions only exists for backward compatibility with analog 
hardware.

I think we would just disable those modes instead of searching for the bug.

Regards,
Christian.

Am 30.03.21 um 11:07 schrieb Alberto Salvia Novella:
> I guessed so.
>
> The GPU is a Radeon HD5870, and the screen is an old Telefunken TV 
> (TLFK22LEDPVR1).
>
> Since my real display got into repair I used this TV meanwhile, and to 
> my surprise it froze the system.
>
> On Tue, 30 Mar 2021 at 10:15, Christian König 
> <christian.koenig@amd.com <mailto:christian.koenig@amd.com>> wrote:
>
>     Hi Alberto,
>
>     well what hardware do you have?
>
>     Interlaced resolutions are not used any more on modern hardware,
>     so they
>     are not well tested.
>
>     Regards,
>     Christian.
>
>     Am 30.03.21 um 10:04 schrieb Alberto Salvia Novella:
>     > The entire desktop hangs after some minutes when using the module
>     > "radeon" with an interlaced resolution.
>     >
>     > Easier to trigger by playing a video on Firefox, at least on
>     kwin_x11.
>     > Wayland didn't exhibit the problem.
>     >
>     > Other display drivers, from different computers I have tried,
>     didn't
>     > allow those interlaced resolutions all together. It seems they know
>     > there will be problems.
>
>
> _______________________________________________
> amd-gfx mailing list
> amd-gfx@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/amd-gfx


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  reply	other threads:[~2021-03-30 13:41 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-03-30  8:04 Interlaced resolutions hang the desktop Alberto Salvia Novella
2021-03-30  8:15 ` Christian König
2021-03-30  9:07   ` Alberto Salvia Novella
2021-03-30 13:41     ` Christian König [this message]
2021-03-30 15:37       ` Alberto Salvia Novella
2021-03-30 16:08         ` Alex Deucher
2021-03-30 16:26         ` Christian König
2021-03-30 20:59           ` Alberto Salvia Novella
2021-03-31  6:44             ` Christian König
2021-03-31  7:21               ` Alberto Salvia Novella
2021-03-31  7:48                 ` Christian König
2021-03-31  8:05                   ` Alberto Salvia Novella
2021-03-31  8:09                     ` Christian König
2021-03-31 14:33                       ` Alberto Salvia Novella
2021-03-31 14:36                         ` Christian König
2021-03-31 14:52                           ` Alberto Salvia Novella
2021-03-31 14:55                             ` Christian König
2021-03-31 15:47                               ` Alberto Salvia Novella
2021-03-31 17:39                                 ` Christian König
2021-03-31 18:01                                   ` Alex Deucher
2021-04-01 15:13                                     ` Alberto Salvia Novella

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