From: Alex Deucher <alexdeucher@gmail.com>
To: Alberto Salvia Novella <es20490446e@gmail.com>
Cc: "open list:EFIFB FRAMEBUFFER DRIVER"
<linux-fbdev@vger.kernel.org>,
"Christian König" <ckoenig.leichtzumerken@gmail.com>,
"amd-gfx list" <amd-gfx@lists.freedesktop.org>,
"Benjamin Herrenschmidt" <benh@kernel.crashing.org>,
"Deucher, Alexander" <alexander.deucher@amd.com>,
"Christian König" <christian.koenig@amd.com>
Subject: Re: Interlaced resolutions hang the desktop
Date: Tue, 30 Mar 2021 12:08:12 -0400 [thread overview]
Message-ID: <CADnq5_O3cOD-zPB4kg_+qh=9oa=LayAsP38KK=R8480w7ish_g@mail.gmail.com> (raw)
In-Reply-To: <CAHJvkbsMY689cK3uq_O+i6jiqgLmSAUcrD43oHxpSsVwyhJ1Mg@mail.gmail.com>
On Tue, Mar 30, 2021 at 12:06 PM Alberto Salvia Novella
<es20490446e@gmail.com> wrote:
>
> This is why I'm using interlaced:
>
> $ xrandr
> Screen 0: minimum 320 x 200, current 1920 x 1080, maximum 8192 x 8192
> DisplayPort-0 disconnected (normal left inverted right x axis y axis)
> HDMI-0 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 16mm x 9mm
> 1920x1080i 60.00*+ 50.00 59.94
> 1920x1080 24.00 23.98
> 1280x720 60.00 50.00 59.94
> 1024x768 75.03 70.07 60.00
> 832x624 74.55
> 800x600 72.19 75.00 60.32 56.25
> 720x576 50.00
> 720x576i 50.00
> 720x480 60.00 59.94
> 720x480i 60.00 59.94
> 640x480 75.00 72.81 66.67 60.00 59.94
> 720x400 70.08
> DVI-0 disconnected (normal left inverted right x axis y axis)
>
> I think the driver should only support resolutions that are progressive, but also at least of 50Hz.
The supported display modes are dictated by the monitor. Do you still
have problems with progressive modes? I'd hate to disable interlaced
modes if they are working fine for others.
Alex
>
> On Tue, 30 Mar 2021 at 15:41, Christian König <ckoenig.leichtzumerken@gmail.com> wrote:
>>
>> 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> 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
>>
>>
> _______________________________________________
> amd-gfx mailing list
> amd-gfx@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/amd-gfx
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next prev parent reply other threads:[~2021-03-30 16:08 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
2021-03-30 15:37 ` Alberto Salvia Novella
2021-03-30 16:08 ` Alex Deucher [this message]
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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