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[40.133.167.21]) by smtp.gmail.com with ESMTPSA id 82sm5153524qkd.48.2021.02.25.14.40.23 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 25 Feb 2021 14:40:23 -0800 (PST) Date: Thu, 25 Feb 2021 17:40:22 -0500 From: Roger To: nouveau@lists.freedesktop.org Message-ID: MIME-Version: 1.0 Content-Disposition: inline X-PGP-Key: http://rogerx.sdf.org/about/armor-F515AC1F231FFC4EF0BCDE7606CEA0ECE2887C75-20170104.asc Subject: [Nouveau] i2c-dev driver corrupts display? X-BeenThere: nouveau@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Nouveau development list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: nouveau-bounces@lists.freedesktop.org Sender: "Nouveau" HARDWARE: Dell Inspiron 8100 laptop nVIDIA Geforce2 Go (NV11) with Intel AGP PROBLEM: Display corruption whenever nouveau module was loaded, seemingly at random. CULPRIT: Whenever the i2c-dev.ko driver/module was loaded, the display would become corrupted, or as if the timing became out of sync with hardware specifications, with weird moving pixels throughout the display. If the i2c-dev is built into the kernel, possible the display would turn-off upon nouveau module loading, but could be possibly worked around (I think) by building the nouveau driver statically into the kernel, possibly loading prior to i2c-dev loading? Been having this problem for many years, finally found it, and nothing found via Google on i2c-dev & nouveau. WORKAROUND: /etc/modprobe.d/blacklist.conf blacklist i2c_dev Or, rebuild the kernel without i2c-dev. Quite a few Linux distributions either compile the i2c-dev into the kernel, or load the module during booting, creating significant display problems (as noted above) when trying to install from a Linux distribution CD/DVD. Most people performing an install, I'm guessing, are then simply performing a nomodeset during boot and/or reverting to VESA/UVESAFB. -- Roger http://rogerx.sdf.org/ _______________________________________________ Nouveau mailing list Nouveau@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/nouveau