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Tue, 12 Oct 2021 13:09:29 -0700 (PDT) Date: Tue, 12 Oct 2021 22:09:10 +0200 From: raingloom To: Philip McGrath Subject: Re: Getting Guix System to use llvmpipe Message-ID: <20211012220910.6d8e482c@riseup.net> In-Reply-To: References: MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Received-SPF: pass client-ip=198.252.153.129; envelope-from=raingloom@riseup.net; helo=mx1.riseup.net X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: help-guix@gnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: help-guix@gnu.org Errors-To: help-guix-bounces+larch=yhetil.org@gnu.org Sender: "Help-Guix" X-Migadu-Flow: FLOW_IN ARC-Message-Signature: i=1; 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aspmx1.migadu.com; dkim=pass header.d=riseup.net header.s=squak header.b=lwhDnHwZ; spf=pass (aspmx1.migadu.com: domain of help-guix-bounces@gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=help-guix-bounces@gnu.org X-Migadu-Spam-Score: -1.62 Authentication-Results: aspmx1.migadu.com; dkim=pass header.d=riseup.net header.s=squak header.b=lwhDnHwZ; dmarc=pass (policy=none) header.from=riseup.net; spf=pass (aspmx1.migadu.com: domain of help-guix-bounces@gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=help-guix-bounces@gnu.org X-Migadu-Queue-Id: 899663C098 X-Spam-Score: -1.62 X-Migadu-Scanner: scn0.migadu.com X-TUID: bPX3c+G94f+V On Tue, 12 Oct 2021 12:52:46 -0400 Philip McGrath wrote: > Hi folks, > > I'm trying to install Guix System on real hardware for the first > time, and I'm having some graphics trouble. > > The machine has an older Asus M5A78L-M/USB3 motherboard with an > onboard Radeon HD 3000 GPU---the R600 family, IIUC, so covered by the > `radeon` driver rather than `amdgpu`. I understand that functionality > will be limited since I'm not using nonfree firmware, and I can live > with that. > > I've tried Debian 11 on this board (without "nonfree"), and, after > noting the missing firmware, it falls back to work acceptably with > `llvmpipe`. > > Unfortunately, Guix System is working less well. When it starts the > display manager (I've tried both GDM and SDDM, with both X11 and > Wayland), the screen goes blank permanently, and the logs show that > starting the X server fails: initially with an error about an > undefined symbol `exaGetPixmapDriverPrivate`, though through various > incantations on the kernel command line or in the X configuration I > can produce other errors, like "X: ../include/privates.h:121: > dixGetPrivateAddr: Assertion `key->initialized' failed." > > Can I configure Guix to give up on the missing firmware and just use > `llvmpipe`, as Debian does? > > Or, of course, if there's something even better I should do, I'd be > glad to hear about that! > > Thanks, > Philip > Just a hunch but maybe you could blacklist the broken firmware on the kernel command line arguments. I think it's something like modprobe.blacklist=radeon,amdgpu? Sorry, I can't look into it more right now, but that should give you some keywords to search for and maybe find the proper docs.