From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.8 required=3.0 tests=BAYES_00,DKIM_ADSP_DISCARD, DKIM_INVALID,DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5449EC433E7 for ; Thu, 15 Oct 2020 14:42:44 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id A95E22076B for ; Thu, 15 Oct 2020 14:42:42 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=gouders.net header.i=@gouders.net header.b="YfWPqZ99" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A95E22076B Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=gouders.net Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=amd-gfx-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 1E3816ED2D; Thu, 15 Oct 2020 14:42:42 +0000 (UTC) Received: from services.gouders.net (services.gouders.net [141.101.32.176]) by gabe.freedesktop.org (Postfix) with ESMTPS id 932396EC41 for ; Thu, 15 Oct 2020 08:12:00 +0000 (UTC) Received: from localhost (ltea-047-066-024-155.pools.arcor-ip.net [47.66.24.155]) (authenticated bits=0) by services.gouders.net (8.14.8/8.14.8) with ESMTP id 09F89pPO010482 (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256 verify=OK) for ; Thu, 15 Oct 2020 10:09:51 +0200 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gouders.net; s=gnet; t=1602749392; bh=2jmKQNUm/436TWB4NvnjprFNADxMgHSh0bDTmpb6Xv4=; h=From:To:Subject:Date; b=YfWPqZ99tlc4zqs6oEXH5b7NePVFGAwS3MJs9Q/3DDmF9gncU1odWFI/CiabvIlVe FgJc04EmkRIS2PxPpO0N5aI2v1a1iXvjppjd9noAlNuAQBkQlrSKq2Vgmkz+xrP72M 3/zAxt7fC6SBKg9bP537F99PFjBjejNfYsujbjfA= From: Dirk Gouders To: amd-gfx@lists.freedesktop.org Subject: Renoir: visual artifacts associated with scrolling User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.1 (gnu/linux) Date: Thu, 15 Oct 2020 10:09:34 +0200 Message-ID: MIME-Version: 1.0 X-Mailman-Approved-At: Thu, 15 Oct 2020 14:42:41 +0000 X-BeenThere: amd-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Discussion list for AMD gfx List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: amd-gfx-bounces@lists.freedesktop.org Sender: "amd-gfx" I am dealing with visual artifacts on my laptop. I'm not sure if screendumps are OK on this list so I will try to describe the two vulnerable applications I identified so far. Both of them can be healed by forcing a full redraws (changing workspace back and forth, minimizing and maximizing windows) when they misbehave: 1) Xterm Using the mouse wheel is OK, SHIFT-PgUp and SHIFT-PgDn result in damaged lower and upper halves of the screen accordingly. This problem I could solve by using another terminal program. 2) Emacs I see visual artifacts when navigating mails or source code, for example. These artifacts are more versatile: sometimes a top line that seems to be pinned, remainders of long lines, sometimes pinned half lines where the top half of a text line and the bottom halfe seem to be a mixture of actually two. Sometimes these artifacts are only identifiable, because all of the displayed text makes no sense in context. The predecessor of that laptop is Intel based and does not behave that way. Running the two applications on that Intel based laptop via ssh from the Renoir machine shows the same problems, though. Because the predecessor of the laptop does not cause these problems, I tried to do a bisect but did not find a "good" candidate. With all kernels an X-server would start with (>v5.4) I see these artifacts. Still, all this probably does not mean it is not user space that causes the problems. Perhaps, someone could give me some hints what else I could do to further examine this problem. Dirk P.S: Scrolling this text up for review before sending it out also partially scrambles the text. _______________________________________________ amd-gfx mailing list amd-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/amd-gfx