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Thu, 04 Apr 2024 22:15:27 -0700 (PDT) MIME-Version: 1.0 References: <17122874330.958ce74.57102@composer.9fans.topicbox.com> <17122917790.F0E8.646708@composer.9fans.topicbox.com> In-Reply-To: <17122917790.F0E8.646708@composer.9fans.topicbox.com> From: adventures in9 Date: Thu, 4 Apr 2024 22:15:16 -0700 Message-ID: Subject: Re: [9fans] cmdline.txt for RPi 4 with QHD screen To: 9fans <9fans@9fans.net> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Topicbox-Policy-Reasoning: allow: sender is a member Topicbox-Message-UUID: 879e683c-f30b-11ee-b267-bc7ef538d553 Archived-At: =?UTF-8?B?PGh0dHBzOi8vOWZhbnMudG9waWNib3guY29tL2dyb3Vwcy85?= =?UTF-8?B?ZmFucy9UNDJhNTViNTVmZmI4MTQxNy1NY2UzMmI5ODVhNDAwZDYyMGJmYmQ1?= =?UTF-8?B?OTg0Pg==?= List-Help: List-Id: "9fans" <9fans.9fans.net> List-Post: List-Software: Topicbox v0 List-Subscribe: Precedence: list Reply-To: 9fans <9fans@9fans.net> List-Unsubscribe: , Topicbox-Delivery-ID: 2:9fans:437d30aa-c441-11e9-8a57-d036212d11b0:522be890-2105-11eb-b15e-8d699134e1fa:Mce32b985a400d620bfbd5984:1:1ksK1-5IEb5BJhMy8qFwrXQARYftRLLx4G6cFu3G0KE I had similar issues when I needed a rpi3 to be forced into running 720p into a video capture device. These used to be handled in config.txt It looks like they moved those setting into a legacy section; https://www.raspberrypi.com/documentation/computers/legacy_config_txt.html#= legacy-video-options I remember it taking several tries of different combinations of group and mode before finding one that worked. On Thu, Apr 4, 2024 at 9:36=E2=80=AFPM wrote: > > Thanks for the quick reply, I put in the hdmi_enable_4k line and no diffe= rence. > > My cmdline.txt is: > > console=3D0 user=3Dglenda nobootprompt=3Dlocal!/dev/sdM0/fs > hdmi_group=3D2 > hdmi_mode=3D82 > hdmi_enable_4kp60=3D1 > hdmi_cvt=3D2560 1440 60 3 0 0 1 > max_framebuffer_width=3D2560 > max_framebuffer_height=3D1440 > hdmi_pixel_freq_limit=3D400000000 > vgasize=3D2560x1440x16 > > It just seems like nothing I do really seems to make much difference. > > Cheers > > Garry > 9fans / 9fans / see discussions + participants + delivery options Permali= nk ------------------------------------------ 9fans: 9fans Permalink: https://9fans.topicbox.com/groups/9fans/T42a55b55ffb81417-Mce32b= 985a400d620bfbd5984 Delivery options: https://9fans.topicbox.com/groups/9fans/subscription